Place hamburger in a skillet on medium heat; break up hamburger and stir until the beef is browned (if hamburger has high fat content, drain excess fat before proceeding).
Place browned hamburger mixture, soup, half of the cheese and the potatoes in a casserole and mix well.
Top with remaining cheese in an even layer.
Bake covered for 30 minutes; bake uncovered 30 minutes more.
