Ingredients

  • 6 ounces bittersweet (not unsweetened) or semisweet chocolate, chopped
  • 1 tablespoon solid vegetable shortening
  • Nonstick vegetable oil spray
  • 4 ounces unsweetened chocolate, chopped
  • 1 3/4 cups all purpose flour
  • 1/4 cup unsweetened cocoa powder
  • 1 teaspoon baking powder
  • 3/4 teaspoon baking soda
  • 1/2 teaspoon salt
  • 2 cups sugar
  • 1/2 cup (1 stick) unsalted butter, room temperature
  • 2 teaspoons vanilla extract
  • 2 large eggs
  • 1 1/2 cups whole milk
  • 3 cups chilled whipping cream
  • 1/4 cup (1/2 stick) unsalted butter, cut into pieces
  • 1 pound good-quality white chocolate (such as Lindt or Baker's), finely chopped
  • 2 teaspoons vanilla extract
  • 1/2 teaspoon almond extract
  • 4 tablespoons amaretto or other almond liqueur

Method

  • Line baking sheet with foil.
  • Stir chocolate and shortening in top of double boiler set over simmering water until melted and smooth.
  • Pour onto prepared baking sheet, tilting pan to spread chocolate mixture to irregular 14x9-inch rectangle.
  • Refrigerate until just firm, about 12 minutes.
  • Spray assorted star-shaped cookie cutters with nonstick spray.
  • Cut out stars.
  • Refrigerate until firm, about 30 minutes.
  • Using small offset spatula, carefully transfer stars 1 at a time to another foil-lined baking sheet.
  • Refrigerate until ready to use.
  • (Can be made 3 days ahead.
  • Cover and keep refrigerated.)
  • Preheat oven to 350F.
  • Butter two 9-inch-diameter cake pans with 1 1/2-inch-high sides.
  • Line bottoms with parchment paper; butter parchment.
  • Stir unsweetened chocolate in heavy medium saucepan over low heat until melted and smooth.
  • Cool slightly.
  • Sift flour, cocoa powder, baking powder, baking soda, and salt into medium bowl.
  • Using electric mixer, beat sugar and butter in large bowl until well blended.
  • Beat in lukewarm melted unsweetened chocolate and vanilla.
  • Beat in eggs, 1 at a time, blending well after each addition.
  • Mix in cocoa powder mixture in 3 additions, alternating with milk in 2 additions.
  • Divide batter between prepared pans.
  • Bake cakes until tester inserted into center comes out clean, about 35 minutes.
  • Cool cakes in pans on racks 10 minutes.
  • Run knife around edge of each pan to loosen cakes.
  • Turn cakes out onto racks and cool completely.
  • Peel off parchment.
  • Bring 1 cup cream and butter to simmer in heavy medium saucepan over medium heat, stirring until butter melts.
  • Remove from heat.
  • Add white chocolate and stir until smooth.
  • Whisk in vanilla.
  • Pour 1 1/2 cups white chocolate filling into small bowl; cover and freeze until cold, about 2 hours.
  • Let remaining white chocolate mixture in saucepan stand at room temperature until lukewarm, about 20 minutes.
  • Using electric mixer, beat remaining 2 cups cream and almond extract in large bowl until peaks form.
  • Working in 3 batches, fold in lukewarm white chocolate mixture.
  • Refrigerate whipped cream frosting just until medium peaks hold, folding occasionally, about 3 hours.
  • Brush 2 tablespoons amaretto over top of each cake layer.
  • Place 1 layer on platter.
  • Spread chilled 1 1/2 cups white chocolate filling over.
  • Top with second cake layer.
  • Spread whipped cream frosting over top and sides of cake.
  • Chill until cold and set, about 1 hour.
  • (Can be made 1 day ahead.
  • Cover and keep refrigerated.)
  • Arrange chocolate stars decoratively atop cake and serve.