Chef tips:
Preheat oven to 350° F. Puree bananas and pumpkin in blender or food processor. Add egg whites, whole egg, and apple sauce, and puree until smooth. Add dry milk and pulse until blended. Add pumpkin pie spice to mixture and blend.
In a separate bowl, combine flour, oat bran, baking soda, and raisins. Mix to combine. Add banana-pumpkin mixture to flour mixture and mix well. Spray a muffin pan with cooking spray and spoon mixture into cups, distributing batter evenly. Bake for 30 minutes or until toothpick inserted into muffin comes out clean.