This is the recipe of my best friend's mother. This is such an easy recipe to throw together. I've always wanted to change the cake and chip flavor but always make chocolate. Once for a bake sale we did use chocolate cake and the vanilla and chocolate swirled chips and labeled them Zebra Cake. They were the first to sell. I have made this in a 9x13 pan and two cake rounds. I'm sure this would freeze well but have never had it last long enough to do it.