This recipe for Pineapple Upside-Down Cake has a delicious rum flavor. The cake is made with a rum-infused batter and the topping is made with brown sugar and butter. The pineapple slices are arranged on top of the topping and the cake batter is poured over them. When the cake is baked and inverted onto a serving platter, the topping becomes the bottom and the pineapple slices are beautifully displayed on top. This cake is perfect for anyone who loves the taste of rum and wants to add a little extra flavor to their cake.