CAKE:

1 white cake mix (not with pudding)
1 lg. box instant chocolate pudding
2 eggs
2 c. water

Mix and bake in 9 x 13 inch pan at 350 degrees until toothpick comes clean.

FROSTING:

1/4 c. butter
2 egg yolks
1 c. powdered sugar
1 c. Cool Whip
3 Heath bars

Cream butter, egg yolks and powdered sugar. Fold in Cool Whip. Crush Heath bars and sprinkle on top. Keep refrigerated.