Preheat the air fryer to 375°F
Form ground beef into patties
Season both sides with salt and pepper
Make a small indent in the center of each patty
Place patties in the air fryer basket in a single layer
Cook for 8 to 10 minutes
Flip the patties halfway through cooking
Add cheese during the last 1 to 2 minutes if desired
Check that the internal temperature reaches 160°F
Remove the burgers and let them rest for a few minutes
Serve on buns with desired toppings