This recipe makes enough to feed an army, so for us empty nesters, it's a perk to be able to freeze meals. Yes, this casserole freezes well. Place any leftovers in a freezer safe container. It will keep for 3 months. To reheat, let it thaw in the refrigerator overnight. Reheat in the microwave in 30 second increments at 50% power. Using 50% power is a gentler way to reheat, and will also heat more evenly.