*You can also use a white cake box mix. I use the Great Value deluxe moist yellow box cake from Walmart, which is a richer, denser, and more moist cake. The white box cake will be more delicate and fluffier. You can even try a spiced cake box mix. If you're in the UK we tested this using a 425g box of Betty Crocker Velvety Vanilla Cake Mix which you can purchase as most large supermarkets.**I know your instinct is to mix everything together, but DON’T! It’s called “dump” cake for a reason. Just layer the ingredients and pop it in the oven.