Yellow Sheet Cake With Chocolate Frosting Recipes

Steps:

• Lightly grease a 9-by-13-inch pan with nonstick spray. Heat the oven to 350 degrees.
• Make the cake: In the bowl of an electric mixer fitted with the paddle attachment, cream the butter and sugar on medium speed until light and fluffy, 4 to 5 minutes. Beat in the eggs one at a time, then the egg yolk, scraping the sides of the bowl after each addition. Mix on medium speed until fully incorporated, about 1 minute. Add the vanilla extract and mix to combine, 15 to 30 seconds.
• In a medium bowl, whisk the flour, baking powder, baking soda and salt to combine. Add about 1/3 of the flour mixture to the mixer and mix on low speed until incorporated, about 30 seconds. Add about half the milk and mix on low speed until incorporated, about 15 seconds more. Repeat with another batch of flour mixture, the remaining milk, then the remaining flour mixture until fully incorporated.
• Transfer the batter to the prepared pan and spread in an even layer. Bake until a toothpick inserted into the center comes out clean and the cake is golden and separating from the pan at the edges, 30 to 35 minutes. Cool completely.
• Meanwhile, make the frosting: Add the butter to the bowl of an electric mixer fitted with the paddle attachment and beat on medium speed until light and fluffy, 3 to 4 minutes. Remove the bowl from the electric mixer, and sift the confectioners' sugar and cocoa into the bowl with the butter. Stir with a spatula a few times to incorporate slightly. Return the bowl to the mixer and beat on medium speed until smooth and uniform in color, 1 to 2 minutes. Add the sour cream and melted chocolate and mix on low speed until combined, about 30 seconds. Add the vanilla and salt and mix to combine.
• Spread the frosting on the cooled cake in an even layer. Garnish with sprinkles, if desired.

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.

Steps:

• For the cake: Preheat the oven to 350 degrees F. Grease and flour two 9-inch cake pans.
• Sift together the flour, baking powder and salt in a large bowl and set aside.
• In an electric mixer, mix the butter and granulated sugar on high speed until fluffy. Scrape the sides of the bowl and mix for a few more seconds. Add the eggs one at a time, mixing well after each addition. Add the vanilla and mix to combine. Alternate adding the dry ingredients and milk in 3 batches, mixing for a few seconds after each addition. Scrape the sides of the bowl, then mix 1 final time.
• Divide the batter between the prepared cake pans and bake until done (a wooden skewer inserted in the cake should come out completely clean), 28 to 30 minutes. Allow to cool for 10 minutes, then turn out to cool completely.
• For the buttercream frosting: Sift the powdered sugar and cocoa together in a large bowl and set aside.
• In an electric mixer with the paddle attachment, cream the butter until smooth, about 2 minutes. Turn off the mixer and add half of the sugar/cocoa mixture. Turn to low speed and mix to combine. Add the rest of the mixture and mix again. Add the cream, vanilla and salt, scrape the sides and beat until fluffy, 2 to 3 minutes. Thin out with a tablespoon of cream at a time if needed.
• Ice the cake with a generous layer in the center and spread all around the sides. WARNING: MUST BE SERVED WITH A GLASS OF COLD MILK!