Banana Oat Muffins with Sour Cream

By AAMMEGAN

4.66 / 5

15min

25min

See on AllRecipes

1 cup rolled oats
1 cup all-purpose flour
1 tablespoon rolled oats
½ cup chopped walnuts
1 teaspoon baking soda
1 teaspoon baking powder
¼ teaspoon ground cinnamon
½ teaspoon salt
½ cup butter softened
1 cup white sugar
2 eggs
1 cup mashed ripe banana
1 teaspoon vanilla extract
½ cup sour cream
⅓ cup rolled oats
4 tablespoons brown sugar
¼ teaspoon ground cinnamon
2 tablespoons butter chilled
¼ cup chopped walnuts