Air Fryer Easy and Delicious Banana Bread

1 large banana, mashed well
1/4 cup oil
1 egg
1 teaspoon vanilla
2 tablespoons white sugar
2 tablespoons brown sugar
1/2 teaspoon cinnamon
a little of salt
3/4 cup flour
1 teaspoon baking soda
1/4 cup chopped walnuts, optional
Additional walnuts for garnish, optional
Oil a small baking pan that can fit the air fryer, I have a capacity of 4 qt.
Press bake option and preheat the air fryer at 350-355 F and bake for 25-30 minutes