1. Preparation of Ingredients: Start by preheating your air fryer to 320°F (160°C). In a large bowl, mash the ripe bananas with a fork until smooth.

2. Mix Dry Ingredients: In a separate bowl, combine the rolled oats, baking powder, baking soda, salt, and cinnamon.

3. Combine Wet and Dry Ingredients: Whisk the eggs, honey, vanilla extract, and Greek yogurt into the mashed bananas until well blended. Gradually fold in the dry ingredients with a spatula, mixing just until combined. Remember, overmixing can result in dense muffins.

4. Add Optional Mix-Ins: If using any mix-ins like nuts or blueberries, gently fold them into the batter now.

5. Prepare Muffin Cups: Line the air fryer basket with muffin liners or lightly grease it if using silicone cups. Fill each cup about three-quarters full with the batter.

6. Cooking: Place the filled muffin cups in the air fryer basket. Cook for 15-17 minutes, or until a toothpick inserted into the center of a muffin comes out clean. You may need to cook in batches depending on the size of your air fryer.

7. Cooling: Remove the muffins from the air fryer and let them cool on a wire rack for about 10 minutes before serving. This helps them set and makes them easier to remove from the cups.