Cake:1/4 Cup butter or margarine1 Cup sugar2 eggs, separated1 1/2 Cups flour2 teaspoons baking powder1 teaspoon salt1/2 Cup milk1 teaspoon vanillaFilling:1/2 Cup brown sugar1 Tablespoon flour1 teaspon cinnamon1 Tablespoon butter or margarine
Cream butter or margarine and sugar. Beat in egg yolks. Add sifted dry ingredients alternately with milk and vanilla. Fold in stiffly beaten egg whites. Combine all the filling ingredients. Pour two-thirds of the batter in a well buttered 7x10 inch cake p
Source: Wonderful Ways To Prepare Cakes & Cookies, page 57
