Boston Cream Pie - cooking recipe

Ingredients

2 c. unsifted all-purpose flour
1 1/2 c. sugar
1 tsp. baking soda
1 tsp. baking powder
1/2 tsp. salt
1/4 c. butter, softened
1/4 c. shortening
1 1/2 tsp. vanilla
1 1/4 c. buttermilk or sour milk
4 egg whites (reserve 2 egg yolks for filling)

Preparation

Grease and dust with flour two 9-inch layer pans.
Combine flour, sugar, soda, baking powder and salt in large bowl.
Add butter, shortening, vanilla and buttermilk.
Blend on low speed for about 30 seconds.
Beat on medium speed for two minutes.
Add egg whites.
Beat for 2 minutes.