kateelliott | Query: Casseroles and Main Dishes that freeze well

Do any of you have a good recipe for a casserole or main dish that freezes well, nothing complex to make and something that would be appropriate to take to a house of mourning? (I note that this is not a personal loss but a family whose loss I would like to acknowledge with some practical help.)

Updated to add: Any vegetarian (or fish) suggestions?