Chocolate Raspberry Trifle

Combine cornstarch, 1 tablespoon sugar and salt in medium, heavy-duty saucepan. Gradually add milk. Whisk in egg yolks until smooth. Cook, stirring constantly, over medium heat until mixture comes to a boil. Boil, stirring constantly, for 1 minute. Remove from heat. Add 1 1/2 cups morsels; stir until melted. Press plastic wrap on surface; refrigerate.

Beat cream and remaining 1 tablespoon sugar until stiff peaks form. Cut cake into 1/2-inch thick slices. Cut one slice into thin strips; reserve for top. In 2-quart straight-sided bowl, layer half cake slices, 1 tablespoon crème de cacao, 1/8 cup jam, half chocolate custard and half whipped cream. Repeat layers with remaining cake slices (less reserved slice), remaining 1 tablespoon crème de cacao, remaining 1/8 cup jam, and remaining chocolate custard. Top with reserved cake strips, remaining whipped cream, and remaining 1/4 cup morsels. Cover; refrigerate for 1 hour. Garnish with raspberries; sprinkle with cocoa.