1. Preheat the air fryer: Set your air fryer to 400°F (200°C) and let it preheat for about 5 minutes. Preheating ensures even cooking.

2. Arrange the fillets: Place the frozen battered fish fillets in a single layer in the air fryer basket. Make sure they’re not overlapping to allow for even cooking.

3. Optional step: Lightly spray the fillets with cooking spray. This can help achieve extra crispiness.

4. Cook the fillets: Set the timer for 10-12 minutes. Halfway through cooking, at about the 5-6 minute mark, open the air fryer and flip the fish fillets using tongs. This helps both sides cook evenly.

5. Check for doneness: After 10-12 minutes, check the fillets. They should be golden brown and crispy. If they’re not crispy enough, you can add an additional 2-3 minutes.

6. Serve immediately: Carefully remove the fillets from the air fryer and place them on a plate. They are best enjoyed hot.