2/3 c. shortening
1 1/2 c. sugar
2 eggs, separated
1 c. mashed banana
1 1/2 c. flour
1 tsp. baking powder
4 tbsp. sour milk
1/2 tsp. vanilla

Cream together shortening, sugar, and egg yolks. Add banana and mix together. Sift together flour and baking powder. Add alternately with milk. Add vanilla. Beat egg whites until stiff. Fold in mixture in 13 x 9 inch greased baking dish. Bake at 350 degrees for 45 minutes.