Homemade Confetti Cake

Directions

1. Preheat oven to 325°. Grease a 13x9-in. baking dish. In a large bowl, cream butter, oil and sugar until light and fluffy, 5-7 minutes. Add eggs, then egg whites, 1 at a time, beating well after each addition. Beat in vanilla. In another bowl, whisk flour, baking powder and salt; add to creamed mixture alternately with buttermilk, beating well after each addition. Fold in sprinkles.
2. Transfer to prepared pan. Bake until a toothpick inserted in center comes out clean, 35-40 minutes. Cool completely on a wire rack.
3. For buttercream, in a large bowl, beat butter until creamy. Gradually beat in confectioners’ sugar until smooth. Add cream, vanilla and food coloring. Beat until light and fluffy. Frost top of cake with frosting, and, if desired, top with additional sprinkles.