Name: 6 Inch Birthday Cake with Easy Buttercream Flowers
Prep time: 30 min
Cook time: 20 min
Total time: 3 h
Yield: serves 8
Ingredients: 1 and 3/4 cups (200g) sifted cake flour; 3/4 teaspoon baking powder; 1/4 teaspoon baking soda; 1/4 teaspoon salt; 1/2 cup (115g) unsalted butter, softened to room temperature; 1 cup (200g) granulated sugar; 3 large egg whites, at room temperature; 1/2 cup (120g) full-fat sour cream, at room temperature; 2 teaspoons pure vanilla extract; 1/2 cup (120ml) whole milk, at room temperature; 1/2 cup rainbow sprinkles; 1 and 1/2 cups (3 sticks; 345g) unsalted butter, softened to room temperature; 6 cups (580g) confectioners' sugar; 1/3 cup (80ml) heavy cream or whole milk; 2 teaspoons pure vanilla extract; 1/8 teaspoon salt