Preheat the oven to 350 degrees Fahrenheit.
In a large bowl, mash the bananas with a fork. Add the eggs, oil, maple syrup, and vanilla extract and whisk everything together.
In a separate bowl, mix together the dry ingredients: almond flour, coconut flour, baking powder, baking soda, pumpkin pie spice, and salt.
Add the dry ingredients to the wet ingredients and stir to combine.
Lightly grease a loaf pan or line it with parchment paper. Pour the batter into the loaf pan and bake for 60-65 minutes.
Cool and slice. Store in an airtight container for up to a week.