Storage: refrigerate leftovers airtight up to 3 days (wrapping in foil helps prevent sticking). Reheat in a 350°F (175°C) oven for 10–12 minutes for the crispiest crust (microwave softens the crust). Freezing: freeze unbaked calzones up to 2 months, wrapped tightly in plastic wrap and foil; bake from frozen, adding 5–10 minutes. Seal edges well to prevent cheese leakage.