Follow these straightforward steps to create your Air Fryer Banana Donut Holes:

1. Prepare the Air Fryer: Preheat your air fryer to 350°F (175°C).
2. Mash the Bananas: In a medium bowl, mash the ripe bananas until smooth.
3. Mix Dry Ingredients: In another bowl, combine the flour, granulated sugar, baking powder, cinnamon, and salt.
4. Combine Wet Ingredients: In the banana bowl, add the egg, milk, melted butter, and vanilla extract. Mix well until fully combined.
5. Incorporate Dry Ingredients: Gradually add the dry mixture to the wet mixture, stirring until just combined. Do not overmix; small lumps are okay.
6. Shape the Dough: Lightly flour your hands and scoop out small portions of the dough. Roll them into balls about 1 inch in diameter.
7. Air Fry the Donut Holes: Place the balls in the air fryer basket in a single layer. Make sure to leave space between each one.
8. Cook: Air fry the donut holes for 8-10 minutes, turning them halfway through for even cooking.
9. Dust with Powdered Sugar: Once golden brown, remove them from the air fryer and allow them to cool slightly. Dust with powdered sugar if desired.

These simple steps will yield fluffy and flavorful donut holes that will be the highlight of your day!