Ninja air fryer onions are the bomb! To top on hamburgers, serve as a side dish or add meat and make fajitas for dinner. Perfectly tender with a wallop of flavor.
Slice onions. The thinner they are the more tender they will become.
Preheat air fryer to 400 degrees for 5 minutes.
Put onions in a bowl and pour olive oil on top. Sprinkle on all seasonings and stir together. Onions should be shiny with oil, if you add more you may need a bit more oil.
Pour them into your air fryer basket and shut. Cook at 400 degrees F for 15 min. total, flipping them every 5 minutes or until they are as tender/browned as you'd like.