1 box white cake mix (no pudding)
1 sm. box instant chocolate pudding
2 c. water
2 eggs

Mix cake ingredients and pour into greased and floured 9x13 pan. Bake according to box directions. Cool.

FROSTING:

2 egg yolks
1/2 stick butter
1 c. powdered sugar
Cool Whip (8 oz.)
3 Heath bars (crushed)

Beat egg yolks, butter and powdered sugar until fluffy, fold in 8 oz. Cool Whip. Frost cake when cool. Sprinkle crushed Heath bars on top of frosting and refrigerate.