Absolutely! Freezing cannelloni is a great way to prepare meals in advance or enjoy leftovers. Here's a breakdown:   Baked Cannelloni: You can freeze leftover baked cannelloni for up to 3 months. Follow proper storage methods (cooling completely, portioning, wrapping tightly) to ensure they retain their texture and flavor upon reheating.   Uncooked Cannelloni: If you haven't baked your cannelloni yet, you can freeze them after filling. Just make sure they are completely assembled and tightly wrapped to prevent freezer burn.