White Moon Cake - cooking recipe

Ingredients

3 c. sifted Swans Down cake flour
3 tsp. baking powder
1/2 tsp. salt
2 c. white sugar
1 tsp. vanilla
2/3 c. butter
1 c. milk
5 egg whites

Preparation

Sift flour once and measure; add baking powder and salt and sift 3 times.
Cream butter and sugar thoroughly until fluffy. Add flour mixture alternately with milk, a little at a time.
Beat after each addition until smooth.
Add vanilla; fold in egg whites.
Bake in greased 9-inch cake pans in a 325\u00b0 oven for 15 minutes, then increase heat to 350\u00b0 and bake 15 minutes longer.