how do i cook a hamburger in my air fryer?
['Preheat the air fryer to 350F / 180C.', 'Mix together the beef, salt and black pepper in a bowl.', 'Form the beef mixture in to four burger patties.', 'Spray the air fryer basket, add in the burgers.', 'Cook for 8-12 mins depending on your desired doneness and turn them half way through cooking.']