Grandma's Easy Washday Casserole

GRANDMA'S EASY WASHDAY CASSEROLE

1 pound hamburger

1 medium onion

5 medium potatoes

1 can mushroom soup

Enough milk to cover

Brown meat. Put in a baking dish.  Slice onion and potatoes over meat. Sprinkle generously with salt and pepper.  Pour soup on top and cover with milk. Bake at 350 for 90 minutes.