1 lg. chocolate cake mix
1 lg. Cool Whip
2 sm. instant chocolate pudding
4 lg. Heath bars (put in freezer before smashing)

Bake cake in 13 x 9 inch pan. Cool. While cooling, make 1 box pudding. Cut cake in half. Use that half to cut into cubes. Put cubes in bottom of a large glass bowl. Pour mixed pudding over cubes. Top with half container of Cool Whip. Cover with 2 Heath bars that have been smashed with a hammer or whatever. Repeat layers; cake, pudding, Cool Whip and candy bar. Refrigerate.