Food & Cooking Recipes Dessert & Treats Recipes Cake Recipes Plum-Almond Upside-Down Cake 3.4 (22) Add your rating & review By Martha Stewart Test Kitchen Martha Stewart Test Kitchen The recipes developed by our test kitchen team have undergone a rigorous process of development and testing, ensuring that every element is optimal, from ingredient amounts to method and cooking time. This process includes triple-testing recipes to ensure they meet our high standards. The many stellar cooks and food editors who have been part of our team include Sarah Carey, Lucinda Scala Quinn, Jennifer Aaronson, Shira Bocar, Anna Kovel, Greg Lofts, Riley Wofford, Lauren Tyrell, and Lindsay Leopold. Editorial Guidelines Updated on July 3, 2019 Print Rate It Share Share Tweet Pin Email Servings: 10 Cornmeal gives this cake a pleasantly grainy texture. Ingredients 10 red or purple plums 6 tablespoons (¾ stick) unsalted butter, plus more for pan 9 tablespoons sugar ½ teaspoon cinnamon All-purpose flour, for pan ¾ cup all-purpose flour 1 teaspoon baking powder 1 large pinch of salt 6 tablespoons yellow cornmeal, preferably coarse-ground 6 tablespoons unsalted butter, room temperature ¼ cup almond paste ¾ cup plus 2 tablespoons sugar 3 large eggs, separated ¼ teaspoon pure vanilla extract ¼ teaspoon almond extract ½ cup milk Directions Prepare fruit layer: Cut plums into quarters; remove pits. Heat butter in a large saute pan over medium heat until it sizzles. Add plums; cook 2 to 3 minutes, until well coated and shiny. Add sugar and cinnamon, and stir to coat plums. Cook, stirring frequently, until plums soften, 10 to 15 minutes. Remove fruit with a slotted spoon, and transfer to a baking sheet to cool slightly. Remove pan from heat, saving syrup. Butter and flour a 9 1/2-by-2-inch round cake pan. Arrange fruit, with cut edges down, in concentric circles starting with outside edge of pan. Fit leftover fruit into any spaces that remain. Return syrup to medium heat, and boil until very thick with large bubbles. Immediately pour over fruit. Let cool. Prepare cake: Heat oven to 350 degrees. Sift together flour, baking powder, and salt. Stir in cornmeal with a fork. Place butter in the bowl of an electric mixer. Crumble in almond paste, and beat with the paddle attachment. Gradually add 3/4 cup sugar, and beat until creamy. Add egg yolks, and beat until well combined. Beat in extracts. Add dry ingredients alternately with milk, beginning and ending with dry ingredients. Set aside. In a clean bowl, whip egg whites until foamy. Gradually sprinkle in 2 tablespoons sugar, and beat until soft peaks form. Add a third of the whites to batter, and mix with a whisk. Gently fold in remaining whites. Spread batter over fruit, and bake until a toothpick inserted in center comes out clean, about 1 hour. Let cool in pan. Just before serving, place pan over low heat for 1 minute to ease unmolding. Run a knife around edges to loosen, and invert onto a serving plate. Rate it Print