Butter a good-sized casserole. Slice 1 small onion and place on bottom. Add a layer of sliced potatoes, about 1 inch. Add a layer of 3 stalks of celery, cut fine. Next, a layer of 4 or 5 slices carrots. Cover with a layer of 1 pound seasoned hamburger, brown to drain fat.

Grate onion over hamburger. Salt between layers according to taste. Place a single layer of sliced potatoes on top. Pour over all 1 can of undiluted cream of tomato soup. Bake 1 hour at 350 degrees.