chopped walnuts or pecans, optional
Preheat oven to 350 degrees. Spray loaf pan (or 2-8x4 pans.)
Mash bananas and set aside.
In a medium bowl combine flour, baking soda and powder, salt.
In a large bowl cream together eggs and sugar
Stir in mashed bananas, vanilla, oil and cinnamon.
Stir in flour mixture, a third at a time, until just combined.
Pour into prepared pan and bake for an hour. If using smaller pans, check in 40 minutes.