1 yellow cake mix
1 can Hershey's chocolate syrup
12 oz. Cool Whip
3 Heath bars

Bake cake. While still hot, poke holes in cake. Pour Hershey's syrup over the top of cake, save a little syrup for top. Let cool. Then put Cool Whip on cake. Chop Heath bars in blender, sprinkle on top of Cool Whip. Pour remaining syrup on top. Cool 2 hours.