This dish freezes pretty well and is a good make ahead freezer meal. I just recommend undercooking the pasta a bit so it doesn't get too mushy when you thaw and bake. After assembling the casserole, cover tightly with a couple of layers of foil. Place the unbaked casserole in the freezer. When ready to serve, thaw overnight in the refrigerator and then. Let it sit at room temperature to warm up a bit before baking. Follow instructions in recipe to bake.