Potato Soup

6 potatoes, peeled and cut
1 large onion, chopped
4 carrots, pared and sliced
2 stalks celery, sliced, including leaves
4 chicken bouillon cubes
1 tablespoon parsley flakes
5 cups water
1 tablespoon salt
pepper
1/3 cup butter
1 12 ounce can evaporated milk

Put all ingredients except milk in crockpot.

Cover and cook on low all day. Stir in evaporated milk during last hour.