Ingredients
Method
- Preheat oven to 350°F; grease an 8x8 inch baking pan.
- Whisk melted butter and brown sugar in a large bowl.
- Stir in egg, mashed bananas, and vanilla.
- Fold in flour until just combined.
- Stir in chopped walnuts.
- Pour into pan; bake 25 minutes, until edges pull away from sides.
