For a quick and easy Easter treat that's fun and whimsical and spring-like, try these Easter Egg Nest Cupcakes with our Simple Vanilla Cupcakes recipe posted here.
Preheat the oven to 375 degrees F. Line 2 muffin tins with paper baking cups.
Cream together the butter and sugar until smooth. Add the egg whites, one at a time, and mix well. Then add vanilla, baking powder, baking soda, salt, flour, milk and sour cream. Beat for a minute or so until the batter is smooth.
Portion the batter equally among paper-lined muffin cups until they are about ⅔ full. Bake for 18 to 20 minutes or until golden brown and a cake tester inserted in the middle comes out mostly clean.
Frosting: Combine the powdered sugar and butter. Stir in the vanilla and milk; beat until smooth. This should take a little while to get the best consistency for frosting. Add food color if you like.