In a medium bowl, whisk together flour, baking powder, cinnamon, and salt.
1 cup all-purpose flour, 1 tablespoon baking powder, ½ teaspoon cinnamon, ¼ teaspoon salt
In a large bowl, mash the banana. Beat in the egg, then whisk in milk until smooth.
¾ cup mashed overripe banana, 1 large egg, ¾ cup milk
Add dry ingredients to the wet mixture. Stir gently until combined (batter will be slightly lumpy).
Line the air fryer basket with parchment paper. Pour about ⅓ cup of batter per pancake, leaving space between each.
Cook at 350°F (180°C) for 4 minutes, flip, and cook another 2 minutes. Repeat with remaining batter.
Serve warm with banana slices and maple syrup.
Banana slices, Maple syrup