Need some freezing help for casseroles? Here’s how we do it. 1. Generously line a freezer-safe baking dish with foil, leaving overhang on all sides of the dish, and then assemble your casserole. 2. Freeze the casserole until it’s rock solid. 3. Using the foil overhang, lift the frozen casserole out of its dish. Wrap it in foil, and then plastic wrap. 4. Store it in the freezer for up to six months. Add a label so you remember what it is. When you’re ready to use it: 1. Remove the plastic wrap an