Preheat your air fryer to 350°F.

Open the can of biscuits and place them on a cutting board.

Use a small circle cutter or shot glass to cut holes in the center of each biscuit.

Brush both sides of the biscuits with melted butter.

In a shallow bowl, mix together the sugar and cinnamon.

Dip each biscuit into the cinnamon-sugar mixture until fully coated.

Place the biscuits in a single layer in the air fryer basket (you may need to cook in batches).

Cook for 5 minutes, flip the donuts over and cook for an additional 5 minutes.

Once golden brown and cooked through, remove from air fryer and let cool slightly before serving.

Enjoy your homemade donuts! Optional: drizzle with glaze or fill with jam before serving for added flavor.