2/3 c. butter
1 1/3 c. sugar
2 eggs
1 1/2 c. mashed banana
2 3/4 c. sifted flour
1 tsp. baking powder
1 tsp. baking soda
1/2 tsp. salt
1/2 c. sour cream
1 c. walnuts, chopped

Cream butter and sugar until light and fluffy. Add eggs and banana and beat until well blended. Sift together dry ingredients. Add alternately with sour cream to banana mixture, stirring to just blend. Stir in nuts and spoon into 9x5 inch loaf pan, greased and floured on bottom only.