500 Cake - cooking recipe

Ingredients

1/2 c. butter
1 1/2 c. sugar
2 egg yolks
1 c. thick sour milk
1 c. mashed bananas
pinch of salt
1/2 c. chopped nuts
1/2 c. chopped dates
2 c. flour
1 tsp. baking powder
1 tsp. baking soda
2 beaten egg whites (add last)

Preparation

Bake at 350\u00b0 for 30 minutes.