Banana Nut Muffins

I found this recipe online and decided to give it a try, since we had a ton of bananas about to go bad. They were easy to make and very yummy! I froze some, I hope they freeze well! I've been playing around lately with making recipes with whole wheat flour, applesauce...so far everything I've tried has worked out, and no one even notices!

1 c. white flour
1 c. whole wheat flour
1 tsp. baking soda
2 Tbl. baking powder
1/4 c. salt
3 c. mashed banana
1/2 c. white sugar
1/2 c. nonfat plain yogurt (I only had vanilla at the time, still worked fine)
2 eggs
3/4 tsp. vanilla
3/4 c. chopped walnuts (optional)
1 -2 dash cinnamon
dash nutmeg

1. Preheat oven to 350 degrees F (175 degrees C). Grease muffin pan.
2. Mix together flour, baking powder, baking soda and salt.
3. In a separate bowl, beat together banana, sugar, egg and vanilla.
4. Stir in the yogurt.
5. Add banana yogurt mixture to flour, stir until just combined.
6. Scoop batter into prepared muffin cups. Bake in preheated oven for 15 to 20 minutes, or until a toothpick inserted into center of a muffin comes out clean. Let cool before serving.
Makes 24 muffins.