Use a 9 x 13 inch pan. Layer of graham crackers. Mix 6 ounce vanilla pudding, instant and 3 cups milk and follow directions on pudding box. Add 8 ounce Cool Whip. Layer on top of graham crackers. Add another layer of graham crackers.

Add frosting: Melt 3 tablespoons cocoa and 4 tablespoons butter. Mix 2 cups powdered sugar and 4-5 tablespoons boiling water with cocoa and butter mixture. Spread on top.