1 (15 1/2 oz.) pkg. chocolate chip snack cake mix
1 (3 3/4 oz.) pkg. instant vanilla pudding and pie filling
1 1/2 c. milk or light cream
3 tbsp. unsweetened cocoa
3/4 c. confectioners sugar
2 tbsp. hot water
1 tbsp. butter, softened

Prepare and bake cake following package directions. Cool cake completely. Prepare vanilla pudding according to package directions, using only 1 1/2 cups milk. Chill until set. Cut cake into two thin layers. On serving plate, place one layer cut side up. Spread with filling and top with remaining layer, cut side down. In a small bowl, combine remaining ingredients until smooth. Pour on top of cake, allowing some to drizzle down sides. Chill until ready to serve.