This Easy recipe for Pineapple Upside Down Cake with an incredibly moist cake loaded with pineapple flavor features caramelized pineapples and cherries. The cake is baked in a single layer and has a topping of caramelized pineapple rings and maraschino cherries. Pineapple upside down cakes are baked in a single pan with the pineapples and cherries at the bottom of the pan. After the cake is baked, it is inverted so the pineapples and cherries are on top of the cake. This is why it’s called an “upside-down” cake. This easy pineapple upside-down cake is supremely moist with loads of pineapple flavor.