Preheat your air fryer to 375
Arrange the onion rings in a single layer in the air fryer basket.
Lightly spray the onion rings with a little olive oil or avocado cooking spray.
Place the basket in the preheated air fryer. Air fry the onion rings for 8-10 minutes.
Halfway through the cooking time toss the onion rings in the air fryer basket or flip the onion rings using a pair of tongs. Continue to air fry until the frozen onion rings get crispy and golden brown.
Serve warm with your favorite dipping sauce!