Basic White Layer Cake

Directions

1. Preheat oven to 350°. Grease and flour two 9-in. round baking pans. In a large bowl, cream butter and sugar until light and fluffy, 5-7 minutes. Add egg whites, 1 at a time, beating well after each addition. Beat in vanilla. In another bowl, combine flour, baking powder, baking soda and salt; add to creamed mixture alternately with buttermilk, beating well after each addition. Transfer to prepared pans.
2. Bake until a toothpick inserted in the center comes out clean, 30-35 minutes. Cool for 10 minutes before removing from pans to wire racks to cool completely. Spread frosting between layers and over the top and sides of cake.