Banana Bread (soft And Moist)

1 c. ripe mashed bananas
1 1/2 c. sifted flour
1 tsp. baking soda
1/2 tsp. salt
1 tsp. cinnamon
1/2 c. butter (no margarine!)
1 c. white sugar
2 eggs
1 tsp. vanilla
1/2 c. sour cream
1/2 c. chopped walnuts (optional)

Mix: butter, eggs, sugar, vanilla in a bowl and mix until creamy. Add: bananas, cinnamon and mix well. Add: soda, salt, sour cream, flour, mix until all smooth. Pour into a greased and floured loaf pan. Bake at 350 degrees for 1 hour until done.