From Allrecipes.com- slightly adapted
I took some of the readers suggestions and changed the recipe a bit.
1 1/2 cups whole wheat flour
1/2 cup all-purpose flour
1/2 cup white sugar
3 teaspoons baking powder
1/2 teaspoon salt
3/4 cup milk
1 large banana
1/2 cup walnuts
Heat oven to 400 degrees F, grease bottoms only of 12 muffin cups or line with baking cups.
In a medium bowl mix dry ingredients well. (except walnuts)
In another bowl, mix milk, mashed banana, and egg. Add dry ingredients at once, add walnuts, and mix lightly until just combined. If you overmix you’ll get a hockey puck instead of a breakfast treat.
Fill muffin cups and bake for 15-18 mins or until toothpick inserted in center comes out clean. Cool for a minute or so before removing from pan.