Recipes for One-layer Cake Plum Upside-down Cake sweetandsavourypursuits.com This beautiful Plum Upside-Down Cake features plums in a delicious butterscotch sauce on top of a tender spiced cake. Try this recipe with nectarines, peaches, pineapple, and even blueberries. submitted by sweet&savourypursuits; breakfast cake one-layer cake plum plums snack summer tea time upside-down Entry Permalink Report Post