Preheat the air fryer for 3-5 minutes at 370F. 3 mins if you have a small air fryer and 5 minutes for a large air fryer.
With a non-stick spatula, place the hamburger patties in the air fryer. Whether you can fit 2 or 4 will depend on the capacity of your model.
Cook the air fryer frozen hamburger for 10 minutes, flipping over after the halfway point. You can add seasoning to one side of the burger after flipping if desired, but this is totally optional.
If you want to add cheese to the burgers, one minute before the cooking time is done add a slice of cheese and continue cooking until the cheese is melted, which will take about 1-2 minutes.
Serve the burger with a bun and your favorite toppings, such as lettuce, tomatoes, onion, pickles, and condiments such as mayo, mustard, and ketchup.
Notes
Always check doneness with a digital thermometer
Add seasoning after flipping for best flavor (optional)
Toast burger buns in the air fryer for 1 minute right after the burgers are done if desired
Cooking time can vary slightly by air fryer model
Approximate macros per serving depend on burger brand but burgers are naturally high protein