Classic Sour Cream-Banana Bread

1/2 stick butter, softened (or 1/4 cup plus 2 tbsp. of olive oil)
1 cup sugar
1 cup mashed fully ripe bananas (2-3 bananas)
1 cup sour cream
2 eggs
2-1/4 cups wheat flour
1-1/2 tsp. baking powder
1/2 tsp. baking soda
1/2 tsp. salt
1 cup chopped walnuts

HEAT oven to 350ºF. Beat butter and sugar in large bowl with mixer until well blended. Add bananas, sour cream and eggs; mix well. Add combined dry ingredients; mix just until moistened. Stir in nuts.

POUR into greased and floured 9x5-inch loaf pan.

BAKE 1 hour or until toothpick inserted in center comes out clean. Cool 5 min.; remove from pan to wire rack. Cool completely before slicing to serve. Refrigerate leftovers.