15.25ouncesboxed chocolate cake mixplus ingredients on the box
14ouncessweetened condensed milk
1cupcaramel sauceplus extra for topping
2Heath toffee barschopped (or 10 miniature bars)
Prepare the cake mix according to package directions. Bake in a 9x13 inch pan as directed on the package.
Meanwhile, combine the sweetened condensed milk and caramel sauce and stir until well incorporated.
When the cake is done, use the handle of a wooden spoon to poke holes all over the cake. Pour the caramel mixture evenly over the top so that it seeps down into the holes. Refrigerate the cake (uncovered) for at least one hour.
Spread the Cool Whip over the top of the cake and sprinkle with the chopped Heath bars.
Store, covered, in the refrigerator for up to 5 days.