1 1/2 c. flour
1 1/4 t. baking powder
1/4 t. baking soda
1/4 t. salt
1 1/2 sticks butter, softened
1 c. sugar
2 large eggs
1 egg yolk
1 1/2 t. vanilla
1/2 c. buttermilk
* Preheat oven to 350 degrees. In medium bowl, whisk together flour, baking powder, baking soda and salt.
* Beat butter and sugar until fluffy (very important). One by one, mix in eggs, egg yolk and vanilla. Add flour mixture alternately with the buttermilk, mixing until smooth and blended.
* Spoon (or use large scoop) into cupcake pan with liners. Bake 25 mins or until toothpick inserted in center comes clean. Cool and top with Buttercream Frosting.
