Best Mocha Cake Recipes

MOCHA CAKE

Steps:

• Preheat oven to 350°. In a large bowl, cream butter and brown sugar until light and fluffy, 5-7 minutes. Add eggs, one at a time, beating well after each addition. Beat in vanilla. Combine flour, cocoa, baking soda and salt; add to creamed mixture alternately with coffee and sour cream, beating well after each addition. , Pour into three greased and floured 9-in. round baking pans. Bake until a toothpick inserted in the center comes out clean, 30-35 minutes. Cool 10 minutes before removing from pans to wire racks to cool completely., In a large bowl, beat cream cheese and butter until fluffy. Beat in the chocolate, coffee and vanilla until blended. Gradually beat in confectioners' sugar. Spread between layers and over top and sides of cake. Cover and refrigerate until serving.

CHOCOLATE CAKE WITH MOCHA FROSTING

Steps:

• Preheat the oven to 350 degrees F. Grease a 9-by-13-by-2-inch baking pan. Line with parchment paper, then grease and flour the pan.
• Place the butter and sugar in the bowl of an electric mixer fitted with the paddle attachment and beat on medium speed for 4 to 5 minutes, until light and fluffy, scraping down the bowl. On medium speed, add the vanilla, then beat in the eggs, one at a time, until incorporated and the batter is smooth.
• Sift the flour, baking soda, and salt together in a medium bowl. In another bowl or a liquid measuring cup, whisk together the hot water, cocoa powder, and espresso powder until smooth. Add the half-and-half and whisk until smooth. With the mixer on low, add the flour and chocolate mixtures alternately in thirds, starting and ending with the flour. With a rubber spatula, scrape down the bowl to be sure the batter is well mixed.
• Pour the batter into the prepared pan, smooth the top, and bake for 25 to 35 minutes, until a cake tester inserted in the center comes out clean. Cool completely in the pan. Turn out onto a flat platter or board and frost the top with the Mocha Frosting. Cut in squares and serve.
• Place the chocolate, butter, and espresso powder in a bowl. Heat the cream to simmer and pour it over the chocolate mixture, stirring occasionally, until the chocolate is melted. (If the chocolate isn't melted, microwave the mixture for 15 seconds.) Stir in the Kahlua and vanilla and stir until the mixture is smooth. Cover and refrigerate for 30 minutes only, until cool but not cold.
• Scrape down the bowl and beat the frosting with a handheld mixer on high speed for 15 to 20 seconds only, until the mixture forms soft peaks. (If you overbeat it, it will curdle!) Spread on the cake immediately with a metal spatula.

MOCHA CHOCOLATE ICEBOX CAKE

Steps:

• In the bowl of an electric mixer fitted with the whisk attachment, combine the heavy cream, mascarpone, sugar, coffee liqueur, cocoa powder, espresso powder, and vanilla. Mix on low speed to combine and then slowly raise the speed, until it forms firm peaks.
• To assemble the cake, arrange chocolate chip cookies flat in an 8-inch springform pan, covering the bottom as much as possible. (I break some cookies to fill in the spaces.) Spread a fifth of the mocha whipped cream evenly over the cookies. Place another layer of cookies on top, lying flat and touching, followed by another fifth of the cream. Continue layering cookies and cream until there are 5 layers of each, ending with a layer of cream. Smooth the top, cover with plastic wrap, and refrigerate overnight.
• Run a small sharp knife around the outside of the cake and remove the sides of the pan. Sprinkle the top with the chocolate, cut in wedges, and serve cold.

MOCHA LAYER CAKE WITH CHOCOLATE-RUM CREAM FILLING

Steps:

• For filling and topping:
• Stir first 3 ingredients in heavy large saucepan over medium-high heat until sugar dissolves and cream comes to simmer. Remove from heat. Add 20 ounces chocolate; whisk until melted and smooth. Whisk in rum and vanilla. Transfer 1 cup warm chocolate mixture to small bowl; whisk remaining 2 ounces chocolate into mixture in bowl and set aside for topping. Cover; let stand at room temperature. Transfer remaining chocolate mixture to large bowl to use as filling; chill until cold and thick, at least 6 hours and up to 1 day.
• For syrup:
• Stir water and sugar in small saucepan over low heat just until sugar dissolves. Remove from heat; mix in rum. Cover and let stand up to 1 day.
• For cake:
• Preheat oven to 350°F. Butter 9x9x2-inch metal baking pan. Line bottom with waxed paper; butter paper. Combine vanilla and coffee powder in cup; swirl to dissolve coffee. Sift flour, cocoa, and baking soda into small bowl. Using electric mixer, beat egg yolks and 1/2 cup sugar in medium bowl until very thick and light in color, about 3 minutes. Beat in vanilla-coffee mixture. Using clean dry beaters, beat egg whites, cream of tartar, and salt in large bowl until soft peaks form. Gradually add remaining 1/4 cup sugar, beating until stiff but not dry. Fold 1/3 of whites into yolk mixture. Fold in half of flour mixture. Fold in half of remaining whites, then remaining flour mixture, then remaining whites. Transfer batter to prepared pan; gently spread to even thickness.
• Bake cake until puffed and tester inserted into center comes out clean, about 18 minutes. Cool in pan on rack (cake may shrink slightly).
• Cut around pan to loosen cake. Turn out onto work surface; peel off paper. Using long serrated knife, cut cake horizontally in half. Place 1 half, cut side up, on platter. Drizzle half of syrup (about 3 1/2 tablespoons) over. Using electric mixer, beat cold chocolate filling until thick and lighter in color, less than 1 minute. Spread all of filling evenly over cake layer, aligning with sides of cake (filling will be about 1 inch thick). Drizzle remaining syrup over cut side of second cake layer. Place layer, syrup side down, atop filling; press to adhere. Rewarm topping over low heat just until pourable. Pour topping onto top center of cake. Using small spatula, spread topping to edges, being careful to keep it from spilling over. Chill cake up to 1 day, covering loosely with foil or with cake dome after 2 hours.
• Cut cake into 16 squares and serve.

MOIST MOCHA CAKE

Steps:

• Arrange rack in center of oven and preheat oven to 350 degrees F. Spray a 9 by 13-inch cake pan with cooking spray and set aside.
• Whisk together flours, cocoa, salt, baking soda and baking powder in a medium bowl, then sift ingredients through a fine mesh strainer.
• In a large mixing bowl, whisk together melted butter and oil. Add eggs and egg whites and whisk to incorporate. Fold in yogurt, vanilla, sugar and dissolved espresso powder. Melt the chocolate in the microwave for 90 seconds or over a double boiler. Fold chocolate into batter.
• Gradually add sifted dry ingredients and stir until just incorporated; do not overbeat. Pour batter into prepared pan. Bake for 25 to 30 minutes, until cake has risen nicely and a toothpick inserted into the center comes out clean. Cool completely.
• While cake is cooling, make the frosting:
• Combine all ingredients in a bowl and beat with an electric hand mixer until soft and creamy. Spread frosting evenly over cake and cut into squares. Finely grate one small square of chocolate. Sprinkle the chocolate shavings over the cake.

LIGHT & FLUFFY CHOCOLATE MOCHA CAKE

Steps:

• Heat oven to 180C/160C fan/gas 4. Lightly butter and line the bases of 2 x 18cm sandwich tins with baking paper. Whisk the eggs and sugar until light and fluffy, about 5 mins with a tabletop mixer or 10 mins using an electric hand whisk. The mixture will have increased greatly in volume and be thick enough to leave a trail on the surface when the whisk blades are lifted.
• Sift the flour, cornflour, cocoa and baking powder over the surface and fold in gently using a large metal spoon. Divide between the tins, gently spreading the mixture to the edges, then bake for 15-20 mins until the cakes are well risen, have begun to shrink away from the sides of the tins and spring back when gently pressed. Leave to cool in the tins for 5 mins, then turn out onto a rack.
• To decorate, microwave the chocolate and coffee together on Medium for 20-30 secs until the chocolate has melted. Gently stir until smooth, then cool slightly. Beat the soft cheese with the yogurt and icing sugar until smooth, then spoon half the mixture into a small bowl stir in the melted chocolate and set aside. Place one cake on a serving plate and spread with the yogurt mixture. Cover with the other cake, then spread the chocolate yogurt mixture over the top.
• To finish, microwave the 15g chocolate on Medium for about 20 secs until melted. Stir gently until smooth, then drizzle all over the cake.

COFFEE-CHOCOLATE LAYER CAKE WITH MOCHA-MASCARPONE FROSTING

Steps:

• For cake:
• Position rack in center of oven; preheat to 325°F. Generously butter two 9-inch cake pans with 2-inch-high sides; dust with flour, tapping out any excess. Line bottom of pans with parchment paper.
• Sift 2 cups cake flour, cocoa, baking soda, and salt into medium bowl. Using electric mixer, beat butter in large bowl until smooth. Add brown sugar and beat until well blended, about 2 minutes. Add eggs 1 at a time, beating well after each addition. Mix in vanilla. Add flour mixture in 3 additions alternately with buttermilk in 2 additions, beating just until blended after each addition. Gradually add hot espresso-water mixture, beating just until smooth.
• Divide batter between pans; smooth tops. Bake cakes until tester inserted into center comes out clean, about 40 minutes. Cool cakes in pans on rack 15 minutes. Run small knife around sides of pans to loosen cakes. Invert cakes onto racks; lift pans off cakes and remove parchment. Place wire rack atop each cake; invert again so top side is up. Cool completely. DO AHEAD: Can be made 1 day ahead. Wrap each cake in plastic and store at room temperature.
• For frosting:
• Sift cocoa powder into large bowl; add espresso powder. Bring 1 cup cream to boil in small saucepan. Slowly pour cream over cocoa mixture, whisking until cocoa is completely dissolved, about 1 minute. Add 1/2 cup cream and sugar; stir until sugar dissolves. Chill until cold, at least 2 hours. DO AHEAD: Can be made 1 day ahead. Cover; keep chilled.
• Add mascarpone to chilled cocoa mixture. Using electric mixer, beat on low speed until blended and smooth. Increase speed to medium-high; beat until mixture is thick and medium-firm peaks form when beaters are lifted, about 2 minutes (do not overbeat or mixture will curdle).
• Using pastry brush, brush off crumbs from cakes. Place 1 cake layer, top side up, on platter. Spoon 13/4 cups frosting in dollops over top of cake. Using offset spatula, spread frosting to edges. Top with second cake layer, top side up, pressing to adhere. Spread thin layer of frosting over top and sides of cake. Chill 10 minutes. Using offset spatula, spread remaining frosting over top and sides of cake, swirling decoratively. Top with chocolate curls, if desired. DO AHEAD: Can be made 1 day ahead. Cover with cake dome; chill. Let stand at room temperature 20 minutes before serving.
• *An Italian cream cheese; sold at many supermarkets and at Italian markets.

MOCHA CHOCOLATE CHIP CAKE

Steps:

• Make the cake: Heat oven to 350 degrees. Butter and flour two 8-inch cake pans, and line the bottoms with rounds of parchment paper cut to fit.
• Using an electric mixer or by hand, in a bowl, mix the butter and turbinado sugar until evenly blended. Add eggs and vanilla, and mix again until smooth. In a separate bowl, whisk or sift the flour, baking powder and salt together. Add half the dry ingredients to the egg mixture, mix well, then add half the milk and mix again. Repeat with remaining dry ingredients and milk. Add the chocolate chips and mix well. The batter may look curdled.
• Pour the batter into the pans and bake until a tester inserted into the center comes out clean, 30 to 35 minutes. Let cool for 15 minutes before removing cakes from pans to a rack to cool completely. If the cakes are domed, use a long, serrated knife to level the tops.
• Make the frosting: Using an electric mixer or by hand, mix the confectioners' sugar with the butter, salt and vanilla, until well blended. In a small bowl, mix the espresso powder with the boiling water to dissolve; add it to the frosting, blending well.
• Place one cake layer on a serving platter and spread about one-third of the frosting over the top in an even layer. Top with the second cake layer and use an offset spatula or butter knife to spread frosting over top and, optionally, sides of the cake. Decorate with the chocolate chips.

MOCHA MOUSSE CAKE

Steps:

• Heat oven to 350°F (325°F for dark or nonstick pans). Grease and lightly flour bottoms and sides of two 8- or 9-inch round cake pans. In large bowl, beat cake mix, water, oil, 2 tablespoons liqueur and the eggs with electric mixer on low speed 30 seconds, then on medium speed 2 minutes, scraping bowl occasionally. Pour into pans.
• Bake 8-inch pans 34 to 40 minutes, 9-inch pans 31 to 37 minutes or until toothpick inserted in center comes out clean. Cool 10 minutes. Run knife around sides of pans to loosen cakes; remove from pans to cooling rack. Cool completely, about 1 hour. Refrigerate layers 45 minutes for easier handling.
• Meanwhile, to make mousse, in 2-quart saucepan, mix 1/4 cup of the whipping cream, the granulated sugar and 1/3 cup liqueur. Cook over medium heat, stirring constantly, until sugar is dissolved and mixture simmers; remove from heat. Stir in chocolate chips with whisk until chips are melted. Stir in 2 teaspoons vanilla. Pour into large bowl; cool to room temperature, about 10 minutes.
• In chilled medium bowl, beat remaining 1/2 cup whipping cream on high speed just until soft peaks form. Fold whipped cream into chocolate mixture. Cover and refrigerate 30 minutes.
• In another chilled medium bowl, beat topping ingredients on high speed until soft peaks form.
• Trim off rounded top of one cake layer. Cut each cake layer horizontally to make 2 layers. (To cut, mark side of cake with toothpicks and cut with long, thin knife.) Place 1 layer, cut side up, on serving plate; spread with one-third of the mousse. Repeat with second and third layers. Top with fourth layer, cut side down. Spread topping over side and top of cake. Cover; refrigerate at least 1 hour before serving. Store covered in refrigerator.

RICH MOCHA CAKE

Steps:

• In a large bowl, combine the first five ingredients. In another bowl, whisk egg, oil and buttermilk. Add to the dry ingredients and stir well. Slowly add the coffee until combined (batter will be thin)., Pour into a greased 13x9-in. baking pan. Bake at 350° for 35-40 minutes or until a toothpick inserted in the center comes out clean. Cool completely on a wire rack., For frosting, melt butter in a small saucepan. Add the sugar and milk; bring to a boil. Reduce heat; cook and stir for 2-3 minutes. Remove from the heat. Add the melted chips and stir until blended. Pour over cake, spreading evenly. Drizzle with caramel topping and sprinkle with pecans.

MOCHA LAYER CAKE

Steps:

• In a large bowl, combine the cake mix, coffee, oil and eggs; beat on low speed for 30 seconds. Beat on medium for 2 minutes. Pour into two greased and floured 8-in. round baking pans. , Bake at 350° for 30-35 minutes or until a toothpick inserted in the center comes out clean. Cool in pans for 5 minutes; invert onto a wire rack. Sprinkle each cake with 1/4 cup chocolate chips; when melted, gently spread chocolate over cakes. Place cakes in the freezer. , Meanwhile, for frosting, in a large bowl, cream the butter, shortening and confectioners' sugar until light and fluffy. Beat in cocoa and extract. Beat in 5 tablespoons coffee, 1 tablespoon at a time until light and fluffy. Spread between layers and over the top and sides of cake. , In a microwave, melt chocolate chips and remaining coffee; stir until smooth. Pour over cake; carefully spread over the top, allowing it to drizzle down the sides.

MOCHA-CINNAMON COFFEE CAKE

Steps:

• In a small bowl, combine the first five ingredients; set aside. In a large bowl, cream butter and sugar until light and fluffy. Add eggs, one at a time, beating well after each addition. Beat in vanilla. Combine the flour, baking powder and baking soda; add to creamed mixture alternately with sour cream just until combined. Stir in chocolate chips., Pour a third of the batter into a greased 10-in. fluted tube pan. Sprinkle with half of the walnut mixture; repeat layers. Top with remaining batter. , Bake at 350° for 40-45 minutes or until a toothpick inserted in the center comes out clean. Cool for 10 minutes before removing to a wire rack. Dust with confectioners' sugar if desired.

MOCHA ICE CREAM CAKE

Steps:

• Blend cookies in processor until finely ground. Add melted butter; process until crumbs are moistened. Press crumb mixture onto bottom of 9-inch-diameter springform pan with 2 3/4-inch-high sides. Freeze until firm, about 10 minutes.
• Place ice cream in large bowl. Finely chop coffee beans in processor. Add to bowl with ice cream; stir until well blended. Transfer ice cream mixture to crust-lined pan. Smooth top. Cover with plastic wrap. Freeze overnight.
• Combine whipping cream and vanilla in another large bowl. Sift powdered sugar and cocoa over. Using electric mixer, beat until soft peaks form. Spread mixture over top of cake. Freeze until cream is set, at least 1 hour. (Can be made 2 days ahead. Cover; keep frozen.) Sprinkle chocolate shavings over top of cake. Run knife between pan sides and cake to loosen. Remove pan sides. Using small metal spatula or knife, smooth cake sides. Let cake stand at cool room temperature 10 minutes before serving.

MOCHA LAYER CAKE WITH CHOCOLATE-RUM CREAM FILLING

Steps:

• For filling and topping: Stir first 3 ingredients in heavy large saucepan over medium-high heat until sugar dissolves and cream comes to simmer.
• Remove from heat.
• Add 20 ounces chocolate; whisk until melted and smooth.
• Whisk in rum and vanilla.
• Transfer 1 cup warm chocolate mixture to small bowl; whisk remaining 2 ounces chocolate into mixture in bowl and set aside for topping.
• Cover; let stand at room temperature.
• Transfer remaining chocolate mixture to large bowl to use as filling; chill until cold and thick, at least 6 hours and up to 1 day.
• For syrup: Stir water and sugar in small saucepan over low heat just until sugar dissolves.
• Remove from heat; mix in rum.
• Cover and let stand up to 1 day.
• For cake: Preheat oven to 350°F.
• Butter 9x9x2-inch metal baking pan.
• Line bottom with waxed paper; butter paper.
• Combine vanilla and coffee powder in cup; swirl to dissolve coffee.
• Sift flour, cocoa, and baking soda into small bowl.
• Using electric mixer, beat egg yolks and 1/2 cup sugar in medium bowl until very thick and light in color, about 3 minutes.
• Beat in vanilla-coffee mixture.
• Using clean dry beaters, beat egg whites, cream of tartar, and salt in large bowl until soft peaks form.
• Gradually add remaining 1/4 cup sugar, beating until stiff but not dry.
• Fold 1/3 of whites into yolk mixture.
• Fold in half of flour mixture.
• Fold in half of remaining whites, then remaining flour mixture, then remaining whites.
• Transfer batter to prepared pan; gently spread to even thickness.
• Bake cake until puffed and tester inserted into center comes out clean, about 18 minutes.
• Cool in pan on rack (cake may shrink slightly).
• Cut around pan to loosen cake.
• Turn out onto work surface; peel off paper.
• Using long serrated knife, cut cake horizontally in half.
• Place 1 half, cut side up, on platter.
• Drizzle half of syrup (about 3 1/2 Tablespoons) over cake.
• Using electric mixer, beat cold chocolate filling until thick and lighter in color, less than 1 minute.
• Spread all of filling evenly over cake layer, aligning with sides of cake (filling will be about 1 inch thick).
• Drizzle remaining syrup over cut side of second cake layer.
• Place second layer, syrup side down, atop filling; press to adhere.
• Rewarm topping over low heat just until pourable.
• Pour topping onto top center of cake.
• Using small spatula, spread topping to edges, being careful to keep it from spilling over.
• Chill cake up to 1 day, covering loosely with foil or with cake dome after 2 hours of chilling.
• Cut cake into 16 squares and serve.

CARAMEL-PECAN MOCHA LAYER CAKE

Steps:

• Preheat oven to 350°. Line the bottoms of two greased 9-in. round baking pans with parchment paper; grease paper. In a small bowl, dissolve coffee granules in hot water; cool completely., In a large bowl, cream butter and brown sugar until light and fluffy. Add eggs, one at a time, beating well after each addition. Beat in vanilla, then cooled coffee. In another bowl, whisk flour, cocoa, baking soda and salt; add to creamed mixture alternately with buttermilk, beating well after each addition. , Transfer batter to prepared pans. Bake 30-35 minutes or until a toothpick inserted in center comes out clean. Cool in pans 10 minutes before removing to wire racks; remove paper. Cool completely., In a bowl, beat cream until it begins to thicken. Add confectioners' sugar and vanilla; beat until stiff peaks form., Place one cake layer on a serving plate. Spread with 1/3 cup caramel topping; sprinkle with 1/3 cup pecans. Spread with half of the whipped cream. Top with remaining cake layer. Spread with the remaining caramel topping and whipped cream. Sprinkle with remaining pecans; top with chocolate curls.

CAPPUCCINO CAKE WITH MOCHA FROSTING

Steps:

• Preheat oven to 350 degrees F (175 degrees C). Grease and flour two 9 inch cake pans.
• In a large bowl, combine cake mix and 1/4 cup cappuccino. Pour in 1 1/4 cups water, 3 egg whites and 1 tablespoon oil. Mix well, then pour batter into prepared pans.
• Bake in preheated oven according to package directions until a toothpick inserted into center of cake comes out clean. Cool in pans for 10 minutes, then turn out onto wire racks and cool completely.
• To make the Mocha Frosting: In a large bowl, combine shortening with vanilla. Blend in half of the confectioners' sugar. Blend in 2 tablespoons milk. Repeat with remaining confectioners' sugar and 2 tablespoons milk. Mix in approximately half of the cocoa.
• Dissolve the 1 tablespoon instant coffee into 1 cup of hot water. While still warm, pour two tablespoons of the coffee into the frosting mixture. Mix in remaining cocoa. Add coffee mixture, a tablespoon at a time, until desired consistency is achieved. Fill and frost cake.

MOCHA CHIFFON CAKE

Steps:

• Preheat an oven to 325 degrees F (165 degrees C).
• Sift the flour, 1 cup sugar, baking powder, and salt together in a bowl. Make a well in the center of the flour mixture. Pour the coffee, oil, and egg yolks into the well; beat well by hand until the batter is smooth with no lumps.
• Beat egg whites with the cream of tartar in a large bowl until foamy. Gradually add 1/2 cup sugar, continuing to beat until stiff peaks form. Lift your beater or whisk straight up: the egg whites should form a sharp peak that holds its shape. Fold the batter into the egg whites; pour into a non-stick Bundt® fluted tube pan.
• Bake in the preheated oven until a toothpick inserted into the center comes out clean, about 60 minutes. Cool in the pans for 10 minutes before removing to cool completely on a wire rack. Loosen the sides with a knife and release the cake onto a serving platter.

CHOCOLATE MOCHA LIQUEUR CAKE I

Steps:

• Preheat oven to 350 degrees F (175 degrees C). Grease and flour a 10 inch Bundt pan.
• In a large bowl, combine the cake mix, pudding mix, oil, 3/4 cup water, eggs, 1/4 cup coffee liqueur and 1/4 cup Vodka. Mix well, then pour into greased and floured Bundt pan.
• Bake in the preheated oven for 50 to 60 minutes, or until a toothpick inserted into the center of the cake comes out clean. Pour glaze over hot cake while still in pan. Let cake sit for 30 minutes.
• To make the glaze: in a small saucepan combine sugar, butter and 1/4 cup hot water. Bring to a boil and cook for 1 minute. remove from heat and stir in 2 tablespoons coffee liqueur and 2 tablespoons vodka.

DARK CHOCOLATE MOCHA MOUSSE CAKE

Steps:

• Make the cake: Preheat the oven to 350˚ F. Butter a metal 8-inch square cake pan. Line the bottom and sides of the pan with parchment paper; lightly butter the parchment. Combine the cocoa and espresso powders in a medium bowl. Heat the milk and butter in a small saucepan over medium-low heat until the milk is steaming and the butter melts. Whisk into the cocoa mixture; let cool to room temperature.
• Whisk the flour, baking powder, baking soda and salt in a medium bowl. In a large bowl, beat the eggs and sugar with a mixer on medium-high speed until very pale, thick and pillowy, 5 to 8 minutes. Beat 30 to 45 more seconds to stabilize the egg foam.
• Reduce the mixer speed to low; beat in the cocoa mixture in 2 additions, alternating with the flour mixture in 2 additions. Beat just until the batter is smooth and no dry flour remains.
• Pour the batter into the cake pan and gently tap against the counter to eliminate any air bubbles. Bake until a toothpick inserted into the center comes out clean, about 35 minutes. Let cool 10 minutes in the pan, then turn out the cake onto a rack. Peel off the parchment but let it rest gently on top of the cake while it cools completely. Wipe the cake pan clean and reserve.
• Make the ganache: Combine 1/2 cup heavy cream, 4 ounces chocolate and 1 tablespoon butter in a small saucepan. Gently cook over medium-low heat, stirring, until melted and smooth. Let cool.
• Make the mousse: Combine the remaining 4 tablespoons butter and 4 ounces chocolate in a small microwave-safe bowl. Microwave in 30-second intervals, stirring, until melted and smooth. Whisk in the cocoa powder until smooth. Let cool.
• Meanwhile, combine 1/4 cup heavy cream and the gelatin powder in a small microwave- safe bowl. Let stand until the gelatin absorbs the liquid, about 5 minutes, then microwave until melted, 20 to 30 seconds, whisking. Let cool, stirring occasionally.
• Combine the remaining 1 1/4 cups heavy cream, the sugar and espresso powder in a large bowl. Beat with a mixer on medium speed to dissolve the sugar, about 1 minute. Stream in the cooled gelatin mixture, then increase the speed to medium high and beat until the mixture is thick and stiff peaks form. Fold in the cooled chocolate mixture in 2 or 3 batches until the mousse is well blended.
• Assemble the cake: Line the reserved cake pan with 2 crisscrossed strips of parchment paper (this will help you lift out the finished cake). Carefully slice the cake horizontally into 3 equal layers. Lay the best layer cut-side up in the bottom of the pan and brush with some of the chocolate liqueur, if using. (Use a plate or small cutting board to move the layers; if your top cake layer is domed, use it for the middle of the cake.) Evenly spread half of the mousse on top with an offset spatula, all the way to the edges. Top with a second cake layer. Brush again with chocolate liqueur, then spread half of the ganache evenly on top. Add the final cake layer, cut-side up, and brush with the remaining liqueur. Top with the remaining mousse and ganache. (The assembled cake should fill the pan.)
• Refrigerate the cake until the top is set, about 30 minutes, then wrap the whole cake pan with plastic wrap and refrigerate overnight to set completely.
• Lift the cake out of the pan using the parchment pieces and transfer to a cutting board. Using a hot, dry serrated knife, slice the cake, wiping the knife in between cuts for clean edges.

FOUR-LAYER MOCHA CREAM CAKE

Steps:

• Preheat the oven to 350 degrees F (175 degrees C). Grease and line two 9-inch cake pans with parchment paper.
• Beat sugar and butter for cake together in a bowl with an electric mixer until creamy; add eggs and beat until pale in color.
• Mix 1 cup boiling water and cocoa powder together in a separate bowl. Mix into the sugar mixture. Combine baking soda with remaining boiling water and add to the batter. Mix in flour and baking powder until just combined. Pour evenly into the prepared pans.
• Bake in the preheated oven until a toothpick inserted into the centers comes out clean, about 30 minutes. Cool for 15 minutes in the pans; run a knife around the edges of the cakes and transfer onto wire racks to cool completely.
• While cakes cool, prepare filling. Combine chocolate chips, sugar, hot water, and coffee granules in a small saucepan. Stir over low heat until sugar is dissolved and mixture is smooth. Cool completely.
• Whip cream until it starts to thicken; add cooled chocolate mixture and whip until stiff.
• Split each cooled cake layer in two with a knife. Divide filling into 4 equal portions. Spread 1/4 of the filling on the first cake layer, top with another layer, and repeat until you've frosted the top layer. Chill at least 1 hour for best results.