Cheesy Hamburger Casserole

[http://rex.nci.nih.gov/NCI_Pub_Interface/Eating_Hints/burgercass.html Cheesy Hamburger Casserole] from Recipes for Better Nutrition During Cancer Treatment by the National Cancer Institute, public domain government resource—original source of recipe

Quickly prepared, this casserole may disappear just as fast at the table! Serves 4