Chocolate Birthday Layer Cake

Move over, Betty Crocker [Photograph: Yvonne Ruperti]

The frosting recipe is adapted from Cook's Illustrated.

Notes:

  • Use a good quality chocolate for the best results.
  • 8-inch cake pans may be used. Baking time may be longer.
  • Make sure to use natural cocoa. Do not use Dutch processed or the leavening of the cake may be affected.
  • Do not over-soften butter or the frosting will be too loose. It should yield lightly to the touch (about 60°F).
  • If the chocolate is too warm, the frosting may be too loose. Just chill the finished frosting briefly until it thickens enough to spread.
  • This cake keeps at room temperature, covered, for 2 days. It can be made ahead and refrigerated. Bring to room temperature before serving.

Chocolate Birthday Layer Cake

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About This Recipe

Yield:makes 12 servings
Active time:45 minutes
Total time:2.5 hours
Special equipment:2 9-inch cake pans, parchment paper, food processor
This recipe appears in: Chocoholic: Chocolate Birthday Layer Cake

Ingredients

  • For the cake:
  • 1 1/2 cups all-purpose flour
  • 1/2 cup cocoa powder
  • 1 1/4 teaspoons baking soda
  • 1/4 teaspoon salt
  • 1 1/4 cups granulated sugar
  • 1 1/4 cup sour cream
  • 2/3 cup vegetable oil
  • 2 large eggs
  • 1 teaspoon pure vanilla extract
  • 1 teaspoon instant espresso powder
  • For the frosting:
  • 20 tablespoons unsalted butter, softened
  • 1 cup confectioners sugar
  • 3/4 cup plus 1 tablespoon cocoa powder
  • Pinch salt
  • 2/3 cup light corn syrup
  • 1 teaspoon pure vanilla extract
  • 10 ounces bittersweet chocolate, melted and cooled

Procedures

  1. 1

    Make Cake: Adjust oven rack to middle position and preheat oven to 350°F. Line bottoms of 2 9-inch cake pans with parchment paper and lightly coat the inside with non-stick pan spray. Sift flour, cocoa, baking soda, and salt into large bowl; set aside. In medium bowl, whisk sugar, sour cream, oil, eggs, vanilla, and espresso powder until smooth.

  2. 2

    Whisk wet ingredients into dry ingredients until smooth. Evenly divide into pans and bake until cake is just firm and toothpick inserted into center comes out with moist crumbs, about 25 minutes. Let cake cool in pans for 15 minutes, then remove cakes from pans to completely cool on wire rack, about 1 hour.

  3. 3

    Meanwhile, make the frosting: In food processor, process butter, confectioners sugar, cocoa, and salt until completely combined and smooth. Add corn syrup and vanilla and combine until smooth, scraping down sides of bowl as necessary. Add chocolate and process until just smooth.

  4. 4

    Assemble the cake:Place one cake (top side up) on serving plate. Spread about 1 cup frosting onto cake. Place second cake (bottom side up) on top. Frost top and sides with remaining frosting. Use back of spoon soup spoon to make swirls on cake. Decorate if desired and serve.

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