-
Preheat oven 350 F. Coat two (9-inch) round cake pans with nonstick cooking spray.
-
In mixing bowl, beat together butter and sugar until well mixed. Add eggs and egg whites, one at a time, beating well after each addition. Add lemonade concentrate and vanilla.
-
In small bowl, combine flour, baking powder, baking soda and lemon rind. Add flour mixture and buttermilk alternately to sugar mixture, beginning and ending with flour mixture.
-
Transfer batter into prepared pans. Bake 18-20 minutes or until wooden pick inserted in center comes out clean. Cool layers on wire racks. Ice with Lemonade Frosting.
-
For frosting: In mixing bowl, beat butter and cream cheese. Add lemonade concentrate. Gradually add powdered sugar until creamy.