Confetti Birthday Cake (Funfetti)

Name: Confetti Birthday Cake (Funfetti)
Prep time: 45 min
Cook time: 25 min
Total time: 1 h 10 min
Cuisine: American
Ingredients: 3 and 3/4 cups (443g) cake flour (spooned & leveled); 1 teaspoon baking powder; 1 teaspoon baking soda; 1 teaspoon salt; 1 and 1/4 cups (282g) unsalted butter, softened to room temperature; 2 cups (400g) granulated sugar; 1/3 cup (80ml) vegetable oil; 4 large eggs, at room temperature*; 2 large egg whites, at room temperature*; 3 teaspoons (15ml) pure vanilla extract; 1 and 1/2 cups (360ml) buttermilk, at room temperature*; 3/4 cup (135g) rainbow sprinkles*; 1 and 1/2 cups (340g) unsalted butter, softened to room temperature; 5 and 1/2 cups (650g) confectioners’ sugar; 1/3 cup (80ml) heavy cream, at room temperature; 3 teaspoons (15ml) pure vanilla extract (or use clear imitation vanilla extract for stark white frosting); 1/8 teaspoon salt; optional: additional sprinkles for garnish

Instructions

Prep:45minCook:25min

Buttery vanilla layer cake filled to the brim with rainbow sprinkles and finished off with sweet vanilla frosting. Pictured cake is 9 inches; for thicker cakes, use 8-inch pans. Review the recipe notes and bring all ingredients to room temperature before you begin.

Updated at: Sat, 05 Jul 2025 00:56:54 GMT