Wouldn't it be great to come home after a long, cold day, throw a pan into the oven, and within an hour and a half (just in time for dinner) have a fragrant, piping hot, homemade entrée ready to put on the table? These casseroles deliver on that dream. Prepared ahead, they retain their fresh-made flavor for up to four months, and they can go straight from freezer to oven. Plus, they're a far cry from calorie- and fat-laden condensed-soup-and-cup-of-cheese casseroles. From a comforting shepherd's pie to a spicy samosa casserole, they're just the things to chase away those winter dinner blues.