1 1/2 CUP flour1 TEASPOON baking soda1 TEASPOON baking powder1/2 TEASPOON salt3 PIECE bananas3/4 CUP sugar1 PIECE egg1/3 CUP butter1/3 CUP brown sugar1 CUP flour1/8 TEASPOON cinnamon1 TABLESPOON butter
Procedure
In a large bowl, mix the flour, baking soda, baking powder, and salt.
Mix bananas, sugar, egg and melted butter.
Stir into dry mixture until thoroughly combined, then stop mixing.
Fill muffin 3/4 full.
Combine brown sugar, flour, and cinnamon topping ingredients.
Cut in cold butter until crumbly.
Sprinkle over muffins.
Bake at 375 degrees for about 20 minutes, until muffins test done.