1 baked devils-food or german chocolate cake (sheet cake) 
1/2 jar of fudge topping (I like the Smuckers) 
1/2 jar of caramel or butterscotch topping 
1/2 can of condensed milk (I like Eagle brand) 
6 Skor candy bars (these are like large Heath Bars) 
1 tub of Cool Whip OR 
1 package of Dream Whip Mix to which you add milk 

Do not remove cake from pan. After the cake has cooled, make holes in the entire top of the cake using a large fork or the handle of a wooden spoon. Pour (one at a time) fudge, butterscotch, and condensed milk over the top of the cake and let each flavor soak in before adding the next. Crush 3 of the Skor candy bars and sprinkle on the top. Frost the cake with the whipped topping and crush the 3 remaining Skor bars to decorate the top.