Mozzarella sticks are a classic appetizer that can be made quickly and easily in your Ninja air fryer. Dip mozzarella cheese sticks in beaten egg, then coat them in breadcrumbs and Italian seasoning. Air fry them until the cheese is melted and the coating is crispy and golden. The air fryer ensures that the mozzarella sticks cook evenly and become deliciously gooey on the inside. Serve them with marinara sauce for dipping.