Most any type of a casserole. You can make lasagna,enchiladas, or a beef stew in the
crock pot, soups or chiles, spaghetti sauce (then, on the day you serve it just cook the noodles). If you can, check out The Food Network web site. You can search for freezer meals, and they literally have millions of them! I always get my inspiration and recipes from there. Also you can check out Campbell's Soup web site for more ideas.
Good luck,can't wait to hear what you decide to make!