- Air Fryer - this would be my 2nd choice. Chicken is perfect in the air fryer. Cook in air fryer for 12-15 minutes instead of using the grill. You can also have your mushrooms & onions cooking in the air fryer at the same time if it's big enough. Layer it all up - add the cheese - and air fry an additonal 2-3 minutes at 275º for the cheese to melt (and not blow all over the place!)