How to Make It
Preheat oven to 350°F. Prepare cake batter according to package directions, stirring pink candy sprinkles into batter. Pour batter into a greased and floured 13- x 9-inch baking pan. Bake until a wooden pick inserted in center comes out clean, 28 to 33 minutes. Cool cake in pan on a wire rack 10 minutes. Invert cake onto rack; cool completely, about 45 minutes.
Prepare the Sweetened Whipped Cream.
Cut out 15 mini cakes from cooled cake using a 2 1⁄2-inch round cutter. Slice each mini cake in half horizontally, making 2 layers per mini cake. Using a small offset spatula, spread Sweetened Whipped Cream on half of layers, and top with remaining layers. Cover tops and sides of cakes with whipped cream. Press edible flowers directly onto cakes.