Ingredients:
3 large overripe mushy bananas
1/3 cup melted butter
3/4 cup packed brown sugar
1 large egg, beaten
1 teaspoon vanilla
1/4 cup sour cream or Greek yogurt, for moisture
1 1/2 cups flour
1 teaspoon baking soda
1/2 teaspoon salt
1/2 teaspoon cinnamon
1 cup chopped walnuts, toasted, plus more for topping
Extra brown...