1/2 c. Oil
Bag of Heath Bar pieces
Eagle Brand sweetened condensed milk
Large tub Cool Whip
Make the cake mix according to directions Add one cup broken pieces Heath bar.
Bake as usual when finished poke holes in warm cake using the end of a wooden spoon. Pour one can Eagle Brand sweetened condensed milk over top of warm cake. Let cake cool. Slather generously with Cool Whip and sprinkle more Heath Bar pieces.