Casserole Recipes for the Cost-Conscious

Our family is really on a budget with this economy. Do you have any casserole suggestions?
Untitled1With six kids in my family growing up, I have consumed more than my fair share of casseroles and stews, sometimes for multiple days until it was all finished up.  As a result I am no fan of tuna noodle casserole and beef stew with vegetables.  That being said, the Idaho Potato Commission has some fun and tasty casseroles to choose from including a re-make of the traditional shepherd’s pie:
Potato Mushroom Pie with Caramelized Onions (pictured above)
Shepherdless Pie
California Tots Casserole