Prepare your cake as directed on box in a clear 9x13" baking pan

Let cool and poke holes in the top of your cake with a spoon handle

Mix together your sweetened condensed milk and caramel

Pour your caramel mix over the top of your cake

Let set for 15 minutes

Frost with your tub of cool whip

Pour half your bag of Heath bits over your cool whip

Slice and enjoy!