Preheat over to 350.
Spray loaf 9x5 pan with non-stick cooking spray and set aside.
In a large mixing bowl, combine banana, eggs, yogurt, peanut butter and melted butter. Beat at medium speed until well blended. Add the sugars and beat well. Add the flax seed, baking soda, cinnamon, reduce speed to low and mix well. Add the flour and beat until well blended.
Pour into the loaf pan and bake at 350 for 65-75 minutes. Let cool 30 minutes before removing from pan.
Go to full version of