Preheat oven to 375 degrees F and spray non-stick 12 muffin tin with cooking spray. Set aside.
In a large bowl, mash bananas with a fork or a masher.
Add pumpkin puree, egg, maple syrup, oil, vanilla, pumpkin pie spice, baking powder, baking soda and salt. Whisk to combine until no white lumps.
Add flour and stir gently just enough to mix.
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 from the oven and let cool for 10 minutes. Enjoy!
Notes
Store: Keep in a cool dry place in a glass airtight container for up to 4 days.
Freeze: Wrap tightly and store in freezer safe container up to 3 months.
To "ripen" bananas faster: Bake yellow bananas with skin on for 20 minutes at 300 degrees F oven. Or place a few ripened bananas or apples with unripened ones in a brown bag, close tightly and wait 1-2 days.
Don’t overmix the batter: If you overmix the batter, gluten develops resulting in tough bread.
Don't over bake: Remove muffins from the oven as soon as toothpick comes out clean.