Yes, you can use aluminum foil to make a grilled cheese sandwich. Place the sandwich on a sheet of aluminum foil, then fold the foil around the sandwich to create a sealed packet. This method will allow the sandwich to cook evenly and prevent sticking. However, be cautious as aluminum foil can tear or puncture easily, and ensure it doesn't come into direct contact with the heat source to avoid burning or melting. A non-stick pan or a piece of parchment paper is usually recommended for better results and easier handling.