Sprinkle 2 tablespoons Chicago steak seasoning or seasoning of your choice on each side of two 6 oz. filet mignon steaks. Pat down the seasoning.
Let your steak marinate for 2 hours, or overnight. When ready to cook, brush each side of the steaks with 1 tbsp. of olive oil. Place the filets on the rack in the air fryer and cook for 4 minutes at 390 degrees on each side.
Remove the air fried steaks and top each filet with 1 tbsp. garlic butter. Let the steaks rest for 10 minutes before cutting.