Thinly slice the onion using a sharp chefs knife or mandolin
Place the sliced onions in a bowl and add ghee. Mix well using a silicone spatula
Add the onions to the air fryer basket spreading them evenly
Air fry at 320 F 20 minutes. Mix and spread them evenly every 5 minutes
Video
Notes
I have tested this recipe in my Cosori 5.8 QT Air fryer which fits 1 large onion or about 2 cups of thinly sliced onions without overcrowding the basket
Remember to mix and spread the onions every five minutes so they cook evenly
Every airfryer works differently so make sure to watch the onions closely during the last 5 minutes and add or reduce the air frying time as needed