Let's make a rainbow cake! : ) ★ ★ ★ ★ ★ INGREDIENTS: ☆ Cake Mix ☆ 300 g flour 1 ½ sticks butter (room temperature) 1 ½ cups granulated sugar 4 large egg whites 2 12 tsp. baking powder ¼ tsp. salt 1 ½ tsp. vanilla extract 1 cup milk (room temperature)
