Slow-Cooker Chicken Broccoli Casserole

3 cups hash-brown potato cubes
2 cups broccoli florettes
2-3 raw chicken breasts, cut in little cubes while still partially frozen
2 cans cream of chicken soup
2 cups grated cheese

Stir all ingredients together in a bowl (it's fine if chicken or potatoes are still frozen).  Spray slow-cooker with non-stick spray.  Dump mixture in slow-cooker.  Cover and cook on high 2-1/2 - 3 hours.