Bake chocolate cake mix as directed in 9 x 13 inch pan. When done poke holes in cake with wooden spoon handle. Pour 1 can Eagle Brand milk over top, then pour a jar of caramel sauce over milk. Frost with Cool Whip. Crush or break, in small pieces, 2 Heath or Skor bars, sprinkle over top of Cool Whip. Refrigerate. Simple and easy, but very good.