1 (18.25 ounce) box chocolate cake mix
2 large boxes instant chocolate pudding
2 regular or 1 large size container Cool Whip
6 Heath bars
Bake chocolate cake as directed. Break cake into large pieces. Use half for bottom layer. Mix pudding as directed on box, then spread half of pudding over cake layer. Top with half of Cool Whip.
Break candy into small pieces. Use half of candy over Cool Whip. Then repeat layers. Top with remaining candy.