A simplified version of a fabulous European creation! You may assemble the rich, layered cake ahead, then stash it away in your freezer. It's ready to serve in 1 hour.

1 (6 oz.) pkg. (1 c.) semi-sweet chocolate pieces
1/2 c. butter
1/4 c. water
4 slightly beaten egg yolks
2 tbsp. sifted confectioners' sugar
1 tsp. vanilla
1 (12 oz.) loaf pound cake

In heavy saucepan, heat chocolate, butter and water over medium heat, stirring until blended. Cool slightly. Add egg yolks, sugar and vanilla; stir until smooth. Chill until mixture is of spreading consistency, about 45 minutes. Slice cake horizontally in 6 layers. Spread chocolate between layers, then frost top and sides. Chill at least 45 minutes before serving. Cut in 1/4 inch slices. BLENDER METHOD: Combine all ingredients for frosting in blender, using SOFT butter and WARM water. Blend on high speed until smooth.