Can I still make the burgers if I don't have an air fryer? Yes! The burgers can be made on a grill or on the stove. Heat the grill to medium-high heat, about 450 degrees F. Make sure grates are well oiled so the burgers don't stick. Cook for 6 minutes per side. If using the stove, heat a large cast-iron skillet over medium-high heat, add 2 tablespoons of oil and cook for 6 minutes per side. Is it okay to put aluminum foil in the air fryer? The answer is, it depends on a number of factors. You may want to line the air fryer with foil to catch burger drippings or melted cheese. It's best to check the manual of your individual air fryer, however, I do use it in the NuWave Brio. Air Fryer Eats has an entire post on using foil in the air fryer that you may want to check out.