Preheat oven 350 degrees F. Prepare muffin pan with paper liners lightly sprayed with oil. Set aside.
Peel and mash persimmon with a fork in a medium bowl, add peeled bananas and mash.
Add coconut oil, vanilla and ground flaxseeds and stir to combine, set aside.
In a large bowl, combine oat flour, almond flour, sugar, baking powder, cinnamon, nutmeg, and salt. Mix well to combine.
Add persimmon mixture and stir well.
Spoon batter into 12 muffin cavities, bake for 25 minutes or until a toothpick inserted in the center comes out clean.