Preheat the Air Fryer: Depending on your air fryer model, preheat it to around 400°F (200°C). Preheating helps in cooking the tempura evenly and achieving a crispy texture.

Prepare the Tempura: While the air fryer is preheating, remove the frozen tempura from the packaging. There's no need to thaw it; you can cook it directly from frozen.

Grease the Basket: Lightly spray the air fryer basket with cooking spray. This step is optional but helps prevent sticking and promotes even browning.

Arrange the Tempura: Place the frozen tempura in a single layer in the air fryer basket. Avoid overcrowding the basket to ensure the hot air can circulate freely around each piece, which is key for crispiness.

Cooking Time: Cook the tempura for about 8-10 minutes, flipping halfway through. The exact time may vary based on the air fryer model and the size of the tempura pieces. You're aiming for a golden brown and crispy exterior.

Check for Doneness: At the end of cooking, check to see if the tempura is thoroughly heated and crispy. If not, you can add a few more minutes to the cooking time.

Serve Hot: Once cooked, remove the tempura from the air fryer. Serve immediately with tempura dipping sauce and lemon wedges for added flavor.