My grandmother got this recipe from one of her great-nieces. It's really good and super-easy. We usually make it with yellow cake mix but I'm sure it would be equally good with chocolate. If you can find Cajeta Quemada (A goat's milk caramel made in Mexico-Coronado brand is best) you can substitute it for the caramel topping. Also if you can get Mexican vanilla that's best too. It has a very distinctive flavor. The ingredients for the cake are for a Betty Crocker cake mix. Use whatever ingredients and proportions your cake mix calls for.