Best Philadelphia Walnut Cake Frosting Recipes

WALNUT CAKE WITH AMERICAN FROSTING

Steps:

• Melted butter, for brushing pans
• 7 ounces all-purpose flour
• Pinch salt
• 1 generous teaspoon baking powder
• 7 tablespoons butter, softened
• 8 ounces caster sugar (superfine)
• 1 teaspoon vanilla extract
• 2 eggs, separated
• 3 1/2 ounces shelled walnuts, roughly chopped
• 3 1/2 ounces milk
• Preheat the oven to 350 degrees F. Brush 2 (8-inch) or 3 (7-inch) cake pans or sandwich pans with melted butter, and dust with flour. Line the base of each pan with parchment or greaseproof paper.
• In a bowl, sift the flour with the salt, and baking powder.
• In a large bowl, or in an electric food mixer, cream the butter until soft. Add the sugar, and vanilla extract, and beat until the mixture is light and fluffy. Beat in the egg yolks, and then stir in the chopped walnuts. Fold in a quarter of the flour and milk into the mixture, alternating each, until they are incorporated.
• In a separate bowl, whisk the egg whites until they are stiff.
• Stir a quarter of the egg whites into the cake mixture, and then gently fold in the rest. Divide the batter between the tins, making a slight hollow in the center of each so that the cake rises evenly rather than forming a peak.
• Bake in the oven until firm to the touch or until a skewer inserted into the center of each cake comes out clean, about 16 to 20 minutes. Remove the cakes from the oven and allow to sit for 5 minutes, before turning out onto a wire rack to cool.
• To make the buttercream filling: Cream the butter until very soft, and then beat in the confectioners' sugar, and the vanilla extract. When the cakes are cool, spread the buttercream filling on one layer, and top with the second layer, sandwiching the layers together.
• Make the American frosting as described below. Spread the American frosting quickly over the cake with a palette knife, regularly dipping the knife into a jug of boiling water to help spread the icing. It sets very quickly at this stage, so speed is essential. Scatter with rose petals, if using, or arrange the walnut halves around the top of the cake, and allow the icing to set until it feels dry on the surface.
• To make the American Frosting: Ensure your cake is ready before you start, as this icing begins to set very quickly. Bring to the boil a saucepan of water large enough to hold a heatproof bowl. Place the egg whites in the bowl and whisk with a hand-held electric beater until very stiff.
• In a separate saucepan over a medium-high heat, dissolve the sugar in the water and boil for 5 to 10 minutes until the liquid is thick and syrupy and has reached the 'thread' stage - when the last few drops that fall from a metal spoon dipped into the syrup come off in one long, quite thick and syrupy thread.
• Pour the boiling syrup over the stiffly beaten egg whites, whisking all the time with the hand-held beater. Place the bowl in the saucepan of simmering water. Continue to whisk over the water for 10 to 15 minutes until the icing is snow white, very thick and meringue-like.
• Spread quickly over the cake with a palette knife, regularly dipping the knife into a jug of boiling water. The icing sets very quickly at this stage, so speed is essential.

FLUFFY COFFEE AND WALNUT CAKE WITH MOCHA BUTTERCREAM

Steps:

• Place a rack in middle of oven; preheat to 325°. Lightly butter three 8"-diameter cake pans and line bottoms with parchment paper rounds. Toast 2 cups (250 g) raw walnuts in a single layer on a rimmed baking sheet, tossing halfway through, until golden brown, 12-14 minutes. Let cool. Set aside 1 cup walnuts for serving.
• Meanwhile, cook ¾ cup (1½ sticks) unsalted butter in a small saucepan over medium heat, stirring often, until it foams, then browns, 6-8 minutes. Remove from heat and immediately stir in ½ cup plus 2 Tbsp. vegetable oil or refined coconut oil, melted. Set brown butter mixture aside.
• Pulse remaining 1 cup toasted walnuts in a food processor until coarsely ground (it should be the texture of panko). Transfer to a large bowl and whisk in 2 cups (250 g) all-purpose flour, 2¼ tsp. baking powder, 1 tsp. Diamond Crystal or ½ tsp. Morton kosher salt, and ½ tsp. baking soda.
• Process 4 large eggs, 1¼ cups (250 g) sugar, 2 tsp. vanilla extract, and 1 tsp. instant espresso powder in food processor (no need to clean bowl) until mixture is lightened in color and thickened, about 30 seconds. Stir 2 Tbsp. whole milk into reserved brown butter mixture. With motor running, gradually stream brown butter mixture into egg mixture and process until combined. Add dry ingredients and process just until a smooth batter forms. Divide batter among prepared pans.
• Bake cakes, rotating pans front to back after 15 minutes, until puffed and just starting to pull away from the sides of pans and a tester inserted in the centers comes out clean, 20-22 minutes. Transfer pans to wire racks and let cakes cool 15 minutes. Run a small knife around edges of each cake to release from pan if needed. Turn out cakes onto racks and remove parchment paper; discard. Turn cakes right side up and let cool completely.
• Combine 8 large egg whites, 2¼ cups (450 g) sugar, ¾ tsp. Diamond Crystal or ½ tsp. Morton kosher salt, and ¼ tsp. cream of tartar in the bowl of a stand mixer. Set over a medium saucepan filled with 1½" of simmering water (bowl should not touch water). Heat, stirring and scraping often with a heatproof rubber spatula, until sugar is dissolved and an instant-read thermometer registers 185°, 10-15 minutes.
• Fit bowl onto stand mixer fitted with whisk attachment and beat, starting on low speed and gradually increasing to high, until meringue is shiny and stiff, 8-10 minutes. Beat in 1 tsp. vanilla extract.
• With mixer on medium speed, add 3 cups (6 sticks) unsalted butter, room temperature, cut into pieces, a piece at a time, mixing until incorporated before adding more. Once all the butter has been added, increase speed to high and beat 1 minute. Transfer buttercream in bowl to refrigerator and chill 30 minutes.
• Fit bowl with buttercream back onto stand mixer and add ¼ cup (21 g) unsweetened cocoa powder, sifted if needed, and 2 tsp. instant espresso powder. Beat on medium-low speed, scraping down sides as needed, until combined.
• Using a large serrated knife and long sawing strokes, remove tops of cakes to level if needed. Place a cake layer, right side up, on a cake stand or large plate. Using an offset spatula, spread ¼ cup buttercream over cake, working all the way to the edges. Place second cake layer, right side up, on top; spread another ¼ cup buttercream over cake, working all the way to the edges. Place third cake layer, cut side down, on top, and press lightly to adhere. Spread top and sides of cake with ½ cup buttercream in a thin, even layer. Chill, uncovered, at least 1 hour and up to 12 hours. (If chilling cake longer than 1 hour, cover remaining buttercream in bowl and chill. Bring to room temperature and beat again before using.)

MOTHER'S WALNUT CAKE

Steps:

• Preheat oven to 350°. Cream butter, shortening and granulated sugar. Add eggs, one at a time, beating well after each addition. Combine flour, baking soda and salt; gradually add to creamed mixture alternately with buttermilk and vanilla. Beat on low speed just until combined. Stir in ground walnuts. , Pour into three greased and floured 9-in. round pans. Bake until a toothpick inserted in the center comes out clean, 20-25 minutes. Cool 5 minutes; remove from pans to wire racks to cool completely. , For frosting, beat cream cheese and butter. Add confectioners' sugar; mix well. Beat in vanilla until smooth. Spread frosting between layers and over the top and sides of cake. Sprinkle with walnuts. Refrigerate.

MAPLE-WALNUT CAKE WITH BROWN-SUGAR FROSTING

Steps:

• Make the cake: Preheat oven to 350 degrees. Lightly coat two 9-inch round cake pans (2 inches deep) with cooking spray. Line bottoms with parchment paper; lightly coat parchment with cooking spray. Flour parchment and sides (tapping out excess); set aside.
• In a medium bowl, whisk together flour, baking powder, and salt. In a large bowl, using an electric mixer, beat butter and brown sugar on high until light and fluffy, 5 minutes. Beat in eggs, one at a time, scraping down bowl as needed. With mixer on medium-high, add maple syrup in a slow, steady stream. Add flour mixture in 2 additions, alternating with milk, beating well after each addition and scraping down bowl as needed. Fold in walnuts.
• Divide batter between pans; firmly tap pans on a flat surface several times to remove air bubbles. Bake until a toothpick inserted in center of a cake comes out clean, 30 to 35 minutes. Let cakes cool in pans on wire racks, 15 minutes, then invert onto racks; peel off parchment. Invert cakes again and let cool completely on racks. With a serrated knife, trim domed top from each cake to make a flat surface.
• Make frosting: In a large bowl, using an electric mixer, beat cream cheese, butter, and brown sugar on high until light and fluffy, 5 minutes. Gradually add confectioners' sugar, 1/2 cup at a time, beating well after each addition.
• Assemble cake: Place one layer, top side up, on a cake stand or serving plate. Spread top evenly with 1 1/2 cups frosting. Top with second layer, top side down. Spread remaining frosting over top and around sides of cake.