In a large mixing bowl, combine rolled oats, peanut butter, maple syrup, chocolate chips (or dried fruits), and optional cinnamon. Mix until all ingredients are well blended and form a cohesive dough.

Set your air fryer to 350°F (175°C) and preheat for 5 minutes. Prepare the basket by lightly spraying or lining it with parchment paper.

Using a cookie scoop or spoon, portion out the dough into equal sizes, shaping and flattening each piece into small rounds.

Place the shaped cookies in the preheated air fryer basket, ensuring space between them. Air fry for 8–10 minutes, flipping halfway through.

Once cooked, gently remove the cookies from the air fryer and let them cool on a wire rack for about 10 minutes.