Yes, you can fry mozzarella cheese without breading it. When mozzarella cheese is heated, it becomes soft and melty, making it a popular choice for frying. Keep in mind that mozzarella cheese can melt quickly, so it's important to monitor it closely while frying to prevent it from completely liquefying. Additionally, using a non-stick pan or adding a bit of flour or breadcrumbs to the pan can help prevent sticking and create a slightly crispy texture.