Preheat oven to 375 degrees F and spray non-stick 12 muffin tin with cooking spray. Set aside.
In a large mixing bowl, add bananas and mash with a fork or a masher. Then add eggs, oil, maple syrup, vanilla extract, cinnamon, baking powder, baking soda and salt; whisk well until combined.
Add oat flour and stir gently with spatula to combine. Distribute batter evenly between 12 openings of a tin (I used regular ice cream scoop) and bake for 22 minutes or until a toothpick inserted in the center comes out clean.
Remove oat flour banana muffins from the oven and let cool for 10 minutes. Enjoy!
Notes
Store: Store in an airtight container in a cool dry place for up to 3 days. After refrigerate for another 3 days.
Freeze: Bake and cool completely. Place in a gallon size Ziploc container, let out as much air as possible and seal. Freeze for up to 3 months. Thaw on a counter for a few hours.