YELLOW SHEET CAKE WITH DARK CHOCOLATE BUTTERCREAM

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Yellow Sheet Cake with Dark Chocolate Buttercream image

Here's a neat trick to ensure that your sheet cake bakes evenly--stud it with metal icing flower nails, which will conduct heat right to the center.

Provided by Chelsey White : Chelsweets : Food Network

Categories     dessert

Time 1h35m

Yield 20 servings

Number Of Ingredients 17

Nonstick baking spray, for the pans
1 1/2 sticks (170 grams) unsalted butter, at room temperature
1 1/2 cups (300 grams) granulated sugar
4 large eggs (224 grams), at room temperature
3 cups (360 grams) cake flour
1 tablespoon (12 grams) baking powder
1 teaspoon (6 grams) fine kosher salt
1 cup (230 grams) buttermilk, at room temperature
1 tablespoon (12 grams) vanilla extract
1/8 cup (28 grams) vegetable oil
2 sticks (217 grams) unsalted butter, at room temperature
1/2 cup (50 grams) unsweetened baking cocoa, sifted
3 cups (340 grams) powdered sugar, plus additional as necessary
1/4 cup (60 grams) heavy cream, plus additional as necessary
4 ounces (114 grams) melted dark chocolate, cooled
1/4 teaspoon (2 grams) fine kosher salt
Rainbow sprinkles, for decorating

Steps:

  • For the yellow cake: Preheat the oven to 350 degrees F. Line a 9-inch-by-13-inch (quarter-sheet) pan with parchment paper, then spray with nonstick baking spray.
  • Place 2 metal flower nails in the center of the pan, flat-side down, a few inches apart. Beat the butter and granulated sugar in the bowl of a stand mixer fitted with the whisk attachment on medium-high speed to incorporate air into mixture, about 2 minutes. Mix in the eggs on low speed, two at a time. Scrape down the sides of the bowl as needed with a rubber spatula.
  • Whisk together the cake flour, baking powder and salt in a separate bowl. Add a third of the dry ingredients to the butter mixture and mix on low speed. Mix in half of the buttermilk on low speed. Repeat this process, finishing with the last third of the dry ingredients. Mix in the vanilla extract and oil, then pour the batter into the prepared pan. Reposition the flower nails so that they're evenly spaced in the pan. Tap the pan on the counter to remove any air bubbles, then bake until a toothpick inserted in the center comes out clean or with a few moist crumbs, 25 to 26 minutes.
  • Allow the cake to cool in the pan for about 15 minutes, then carefully flip it onto a cooling rack to finish cooling.
  • For the dark chocolate buttercream: Beat the butter in a stand mixer fitted with the paddle attachment on medium speed until smooth, about 30 seconds. Turn the mixer to low speed and add the cocoa, then mix until the cocoa is fully incorporated and no clumps remain. Slowly add the powdered sugar, 1 cup at a time, alternating with small splashes of cream. Mix in the melted dark chocolate, then the salt. Beat until the ingredients are fully incorporated and the desired consistency is reached. If the frosting is too thick, add an extra tablespoon of heavy cream. If it's too thin, add another 1/2 cup powdered sugar. Stir by hand with a rubber spatula for a couple minutes to make the frosting super smooth.
  • Remove the flower nails from the cake. Spread an even layer of chocolate buttercream on top of the cake, making swirls with an offset spatula. Top with rainbow sprinkles.

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