Ingredients

  • 12 cup unsweetened cocoa powder
  • 2 cups all-purpose flour
  • 1 teaspoon baking powder
  • 12 teaspoon baking soda
  • 23 cup butter, softened
  • 1 34 cups sugar
  • 3 eggs
  • 4 ounces unsweetened chocolate, melted and cooled
  • 2 teaspoons vanilla
  • 1 12 cups milk
  • 12 ounces semisweet chocolate pieces (2 cups)
  • 12 cup butter
  • 8 ounces sour cream
  • 4 12 cups powdered sugar, sifted (about 1 pound)

Method

  • Grease three 9-inch round baking pans, three 8X8X2-inch square baking pans; lightly dust each pan with 1 teaspoon of the cocoa powder.
  • In a medium bowl, stir together the remaining cocoa powder, flour, baking powder, and baking soda.
  • Set aside.
  • Preheat oven to 350 degrees F. In a large bowl, beat the butter with an electric mixer on medium to high speed for 30 seconds.
  • Add sugar; beat until combined.
  • Add eggs, one at a time, beating for 30 seconds after each addition.
  • Beat in chocolate and vanilla.
  • Alternately add flour mixture and milk to chocolate mixture, beating on low speed until well mixed.
  • (Batter will be thick.
  • ).
  • Divide batter among prepared pans; spread evenly.
  • Bake in the preheated oven for 20 to 25 minutes or until a toothpick inserted near the centers comes out clean.
  • Cool in pans on wire racks for 10 minutes.
  • Remove from pans.
  • Cool completely on wire racks.
  • Make chocolate curls, if using.
  • Arrange curls in an even layer on a waxed paper-lined tray and set aside in a cool, dry place.
  • To assemble cake, spread Chocolate-Sour Cream Frosting on tops of two of the layers; stack.
  • Add top layer; frost the top and sides of the cake.
  • If desired, while frosting is still moist, use a 4- to 6-inch wooden skewer or tweezers to lightly press chocolate curls into frosting around the bottom two-thirds of the cake.
  • If desired, garnish top with raspberries and mint.
  • Store, covered, in the refrigerator.
  • Makes 12 to 16 servings.
  • In a large saucepan melt chocolate chips and butter over low heat, stirring frequently.
  • Cool for 5 minutes.
  • Stir in sour cream.
  • Gradually add powdered sugar, beating until smooth.
  • This frosts tops and sides of two 8- or 9-inch cake layers.
  • **Chocolate-Mint Sour Cream Frosting: Prepare as above except stir in 1/2 teaspoon mint extract with the sour cream.
  • Makes about 4-1/2 cups.