Food & Cooking Recipes Dessert & Treats Recipes Cake Recipes Classic Breton Butter Cake 5.0 (1) Add your rating & review By Martha Stewart Martha Stewart Martha Stewart is a bestselling author, entrepreneur, and lifestyle expert who has taught millions of people through generations the joy of entertaining, cooking, gardening, collecting, crafting, and home renovating via her eponymous magazine, Martha Stewart Living, Emmy-winning television shows, and 99 books (and counting). Based in Katonah, N.Y., where she helms her 156-acre Bedford Farm, Martha is America's first self-made female billionaire. Editorial Guidelines Updated on July 8, 2019 Rate PRINT Share Trending Videos Close this video player Photo: Bryan Gardner Yield: 1 9-inch cake Ingredients 2 sticks (1 cup) unsalted butter, room temperature, cut into small pieces, plus more for pan 1 ½ cups all-purpose flour, plus more for dusting 1 cup cake flour (not self-rising) 1 ½ teaspoons baking powder ½ teaspoon salt 1 large whole egg, lightly beaten, plus 4 large egg yolks 1 cup sugar Directions Preheat oven to 350 degrees. Butter a 9-inch tart pan with removable bottom. Sift both flours, baking powder, and salt into a large bowl; set aside. In the bowl of an electric mixer fitted with the paddle attachment, beat the egg yolks and sugar on medium-high speed until doubled in volume and pale yellow, 2 to 3 minutes, scraping down the sides of the bowl as needed. Add the butter in four parts, beating until completely combined after each, 1 to 2 minutes total. With the mixer on low speed, add flour mixture, beating until combined. Transfer batter to prepared pan; with a small offset spatula, spread batter and smooth top. (If necessary, chill batter for 10 minutes before smoothing.) Refrigerate for 30 minutes. Remove pan from refrigerator. Brush top with beaten egg, and mark a crosshatch pattern with a knife. Brush again with egg. Bake until cake is deep golden brown and edges pull away from sides of pan, 40 to 45 minutes. Cover with foil if browning too quickly. Transfer to a wire rack to cool slightly. Remove cake from pan, and slice while still warm. Rate It PRINT