Confetti Birthday Drip Cake
This is a moist and fluffy vanilla drip cake with lots of sprinkles and a whipped vanilla buttercream. It's almost impossible not to feel happy when you see the fun pop of rainbow confetti! —Courtney Rich, Highland, Utah,Ingredients1 cup unsalted butter, room temperature1/3 cup vegetable oil1-3/4 cups sugar3 large eggs, room temperature3 large egg whites, room temperature1 tablespoon...