Crumb Topped Banana Muffins

Source: http://www.food.com/recipe/crumb-topped-banana-muffins-43509

1-1/2 C Flour
1 t Baking Soda
1 t Baking Powder
1/2 t Salt
3 Ripe Bananas, Mashed
3/4 C Sugar
1 Egg, Lightly Beaten
1/2 C Butter, Melted

Crumb Topping
1/3 C Brown Sugar
1 T Flour
1/4 t Cinnamon
1 T Cold Butter
1/3 C Walnuts

Preheat oven to 375F.

Combine flour, baking soda, baking power, and salt. Mix. In another bowl combine butter, sugar, egg, and mashed banana. Mix well. Add to dry ingredients. Mix just until moistened. Transfer mixture to a loaf pan or lined muffin pan.

Combine brown sugar, flour, and cinnamon. Mix well. Cut in cold butter until mixture is crumbly. Stir in walnuts. Spread over loaf or muffins.

If making muffins, bake for about 25 minutes or until a toothpick near the center comes out clean.

If making loaf, cover loaf for 30 minutes to prevent excessive browning of the crumb mixture. Remove covering and bake an additional 30 minutes or until a toothpick in the center comes out clean.