Food & Cooking Recipes Breakfast & Brunch Recipes Plum Cake 3.3 (213) 11 Reviews 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 January 16, 2019 Print Rate It Share Share Tweet Pin Email Prep Time: 25 mins Total Time: 1 hrs 30 mins Servings: 10 This moist, lemony plum cake needs little more than a dusting of confectioners' sugar. If you like, though, a dollop of sour cream is a delicious accompaniment. Ingredients ¾ cup (1 ½ sticks) unsalted butter, room temperature, plus more for pan 1 ½ cups plus 2 tablespoons all-purpose flour (spooned and leveled) ½ teaspoon baking soda ¼ teaspoon salt ½ cup packed light-brown sugar ½ cup granulated sugar 3 large eggs 1 teaspoon pure vanilla extract 2 teaspoons finely grated lemon zest ¼ cup sour cream 3 plums, halved, pitted, and cut into eighths Confectioners' sugar, for dusting Directions Preheat oven to 375 degrees. Butter an 8-by-2-inch or a 9-inch cake pan and line bottom with a round of parchment. In a large bowl, whisk together 1 1/2 cups flour, baking soda, and salt. Using an electric mixer, beat butter and sugars until light and fluffy. With mixer on low, beat in eggs, one at a time, until incorporated; beat in vanilla and lemon zest. Beat in half the flour mixture, then sour cream. Add remaining flour mixture; mix just until combined. Spread batter into pan and smooth top with a knife. In a bowl, toss plums with 2 tablespoons flour and sprinkle over batter. Bake until cake is golden, about 30 minutes; loosely tent with foil and bake until cake pulls away from side of pan and a cake tester inserted in center comes out clean, about 35 minutes more. Let cake cool completely in pan. Run knife around cake edge and remove cake from pan. Dust with confectioners' sugar before serving. Rate it Print