Banana muffins with streusel topping

Muffins:
1 1/2 cups all purpose flour
1/2 teaspoon salt
1 teaspoon baking powder
1 teaspoon baking soda
1/2 teaspoon cinnamon
dash of nutmeg
3 or 4 ripened bananas (about 1 cup mashed bananas)
1/2 cup granulated sugar
1/4 cup brown sugar
1 egg
4 tablespoons melted butter

In a large mixing bowl, whisk together the flour, salt, baking powder, baking soda, cinnamon and nutmeg. Set aside. In another mixing bowl, mash the bananas and add the sugars, egg and melted butter. Whisk together until smooth. Add to the dry ingredients and mix just until combined. Don’t over mix. Evenly distribute between 12 muffin cups that have been sprayed with non-stick spray.

Streusel topping:
1/3 cup brown sugar
2 T flour
1/8 tsp cinnamon
1 T butter

In a small bowl, combine dry ingredients for streusel, cut in butter and whisk until you get a lumpy streusel consistency. Sprinkle on top of muffins.
Bake at 350 for about 15-20 minutes.