3 banana nut muffins with streusel Recipes

all-purpose flour (about 6 3/4 oz), whole wheat flour (about 2 1/2 oz), brown sugar, baking powder, ground cinnamon, salt, mashed ripe banana (about 2 bananas), low-fat milk, canola oil, vanilla extract, egg, chopped walnuts, toasted, oats, all-purpose flour (about 1 1/2 oz), brown sugar, butter, softened, ground cinnamon

flour, baking powder, baking soda, cinnamon (divided ), egg, banana (mashed ), sugar, vegetable oil, walnuts (chopped ), brown sugar, oats, unsalted butter (melted )