Hot or cold, this savoury turnover is a fantastic pocket to hold an Italian dinner or a picnic lunch. Stuff them with spicy pepperoni, sun-dried tomatoes, and mozzarella cheese and serve with tomato sauce for a filling dinner. Traditionally, the sauce is always on the side of the calzone. They are a great vegetarian lunch for picnics when filled with cooked cauliflower, broccoli, or butternut squash.