Ingredients
2 medium to large yellow onions or around 1 lb
1 tablespoon cooking oil

Instructions
Peel and cut the onion into thin round slices.
Drizzle oil over the slices and then gently separate the rings.
Place the onion rings in the air fryer basket. Fry them initially at 300F for 10 min. Gently mix the rings at 5 min intervals.
Now lower the temperature down to 240F and continue heating the rings. After every 5 min gently mixes the rings. It will take 15-18 min @240F to get the desired color and texture