Heath Bar Cake

I have heard this cake called many things but for the sake of being proper we'll call it Heath Bar Cake. It is so easy but super rich and delicious. It won an award at a friend's annual Death by Chocolate party.

1 18.25 oz. pkgs. devils food cake, chocolate, or german chocolate cake mix
14 oz. can sweetened condensed milk
6 oz. caramel ice cream topping
3 1.4 oz. skor or heath bars, chopped
1 8 oz. contained frozen whipped topping, thawed

Bake cake according to package directions for a 9 x 13 in. pan; Cool on wire rack for 5 minutes. Poke holes with wooden spoon all over cake. Pour caramel topping evenly over warm cake. Do the same with the sweetened condensed milk.

Allow cake to cool completely. Top with whipped topping and chopped toffee bar chunks and more caramel sauce. Refrigerate until serving.