

Preheat oven to 350 degrees.Beat together butter, sugar, vanilla, egg.
Add bananas.With a potato masher or a fork, mash in banana and mix well.
Add flour, baking soda, and salt.Stir until everything is combined.
Add nuts and stir again.Spray a loaf pan with non-stick cooking spray.
Pour mixture into loaf pan.Cook for 55-65 minutes or until an inserted tooth pick comes out clean.