Diabetic Coma

1 German chocolate cake mix
1 king-size Heath? candy bar
1 jar caramel ice cream topping
1 (8 ounce) container Cool Whip?

Bake cake mix as directed in a 13 x 9-inch pan. While still hot, poke holes in cake and drizzle caramel topping over top of cake. Allow to cool. Crush Heath? bar and sprinkle over caramel topping. Cover with Cool Whip?.