Preheat oven to 325°F. Grease or line a 9×5-inch loaf pan. <
P id=”instruction-step-2″>2. Whisk together flour, baking soda, cinnamon, and salt in a bowl.
P id=”instruction-step-3″>3. In a large bowl, beat sugar and eggs until light and fluffy.
P id=”instruction-step-4″>4. Add oil, mashed bananas, sour cream, and vanilla. Mix well.
P id=”instruction-step-5″>5. Fold dry ingredients into wet until just combined.
P id=”instruction-step-6″>6. Fold in walnuts, if using.
P id=”instruction-step-7″>7. Pour batter into prepared pan.
P id=”instruction-step-8″>8. Bake for 55–70 minutes, until a toothpick comes out with moist crumbs.
Id=”instruction-step-9″>9. Cool in pan for 10 minutes, then transfer to rack.
Id=”instruction-step-10″>10. Slice when completely cool.
