HOW TO MAKE A MARBLE CAKE RECIPES

Steps:

• In top of a double boiler or a metal bowl over barely simmering water, melt chocolate and 3 tablespoons butter; stir until smooth. Cool to room temperature., Preheat oven to 375°. Line bottoms of 3 greased 8-in. round baking pans with parchment; grease parchment., In a large bowl, cream remaining butter and sugar until light and fluffy. Add eggs, 1 at a time, beating well after each addition. Beat in vanilla. Whisk flour, baking powder and salt; add to creamed mixture alternately with sour cream, beating well after each addition., Remove 2 cups batter to a small bowl; stir in cooled chocolate mixture and, if desired, chocolate chips, until blended. Drop plain and chocolate batters by tablespoonfuls into prepared pans, dividing batters evenly among pans. To make batter level in pans, tap several times on counter., Bake until a toothpick inserted in center comes out clean, 20-25 minutes. Cool in pans 10 minutes before removing to wire racks; remove parchment. Cool completely., For frosting, in a large bowl, beat butter until smooth. Gradually beat in confectioners’ sugar, vanilla and enough milk to reach desired consistency., If cake layers have rounded tops, trim with a serrated knife to make level. In a microwave, melt chocolate chips; stir until smooth. Cool slightly., Place 1 cake layer on a serving plate; spread with 1/2 cup frosting. Repeat layers. Top with remaining cake layer. Frost top and sides of cake., Drop cooled chocolate by 1/2 teaspoonfuls over frosting. Using a large offset spatula, smear chocolate to create a marble design in frosting.

Steps:

• Put the first 5 ingredients into the bowl of your mixer. Mix on low speed for at least 30 seconds to combine.
• Add the softened butter (cut into pieces) mix on low speed just until it looks like coarse sand. The dry ingredients will be moistened/coated by the butter and will stick to together if you press some between two fingers. Don't over-mix or it will turn into a large dough-like ball.
• Add the eggs 1 at a time, mixing until blended. 
• Add the vanilla to the 1 cup buttermilk. With the mixer on lowest speed gradually pour into the mixer. Increase the speed to #2 or # 3 (on a KitchenAid mixer). Mix for about 2 minutes, batter will be smooth and fluffy. If you are using a hand mixer rather than a stand mixer, mix a bit longer.
• Mix 4 Tablespoons unsweetened cocoa powder with 3 to 4 Tablespoons very hot water. Stir until smooth & set aside.
• Put 1 1/2 cups cake batter into a medium sized bowl and stir in the chocolate mixture to create chocolate batter. Set aside.
• Put about a cup of yellow batter into each of the three pans & spread, then add a few dollops of chocolate batter by the spoonful to each of the pans. Swirl with offset spatula or knife (we usually use something about 1/2 inch wide). Add more yellow batter by the spoonful, adding chocolate batter here and there until finished. Swirl this newly added yellow and chocolate. Be careful not to over-swirl- you'll lose the contrasting colors.
• Bake at 325 degrees for 25-30 minutes or until a toothpick inserted in the center comes out clean. Let the cake cool in the pans 5-10 minutes, then turn out.