Banana Sour Cream Walnut Loaf

This is a nice dense loaf just like the gourmet bakeries sell!!

2/3 c. softened butter
1 1/3 c. sugar
2 3/4 c. flour
1 t. baking powder
1 t. baking soda
1/2 t. salt
2 eggs beaten
1 1/2 c. mashed bananas
1/2 c. sour cream
1 c. chopped nuts
Cream butter, gradually add sugar, beat on med. speed. Combine flour and next 3 ingred. Mix well. Combine eggs, bananas and sour cream. Add flour misture to creamed mixture alternating with banana mixture, beginning and ending with flour. Stir in nuts. Pour batter into greased loaf pan, bake at 350 1 hour and 15 mts.