Preheat your oven or air fryer to 350°F (175°C).

Mash one large ripe banana until smooth.

Combine the almond flour and the mashed banana, adding cinnamon or vanilla extract if desired.

Roll the combined mixture into 1-inch balls.

Place the dough balls on a lined baking sheet.

Bake for 12-15 minutes or air-fry for 8-10 minutes.

Optionally, roll warm donut holes in a mixture of coconut sugar and cinnamon.

Cool the banana donut holes on a wire rack before serving.