Banana Crumb Muffins

Muffins:
1 1/2 c. all-purpose flour
1 tsp. baking soda
1 tsp. baking powder
1/2 tsp. salt
3 bananas, mashed
3/4 c. white sugar
1 egg, lightly beaten
1/2 tsp. cinnamon
1/3 c. butter, melted

Topping:
1/3 c. packed brown sugar
2 tbsp. all-purpose flour
1/8 tsp. cinnamon
1 tbsp. butter

Preheat oven to 375°F. Lightly grease 10 muffin cups, or line with paper liners.

To make muffins, in a large bowl, mix together flour, baking soda, baking powder, and salt. In another bowl, beat togther bananas, sugar, egg, cinnamon, and melted butter. Stir banana mixture into flour mixture just until moistened. Spoon batter into prepared muffin cups.

To make topping, in a small bowl, mix together brown sugar, flour, and cinnamon. Cut in butter until mixture resembles coarse cornmeal. Sprinkle topping over muffins.

Bake for 18 to 20 minutes, or until toothpick inserted into center of muffin comes out clean.