Go Nuts For Banana Bread

Name: Go Nuts For Banana Bread
Prep time: 15 min
Total time: 15 min
Cuisine: American
Ingredients: 1 1/2 teaspoons vegetable shortening or unsalted butter; 3 ripe bananas; 2 eggs; 1 cup packed light brown sugar; 3/4 cup vegetable oil; 1/2 cup sour cream; 3/4 teaspoon ground cinnamon; 1 teaspoon baking soda; 1 teaspoon baking powder; 1 teaspoon vanilla extract; 1/2 teaspoon salt; 3/4 cup chopped walnut pieces; 1 3/4 cups all-purpose flour