In a medium skillet, brown the sausage over medium heat until no longer pink; drain.

In a large bowl, combine the soup, milk, sour cream, onion, salt and pepper.

In a lightly greased 5 qt. slow cooker, layer half the potatoes, soup mixture and sausage; repeat layers.

Cook on low setting for 6-8 hours or until done.

Uncover and sprinkle with cheese.

Cover and cook 5-10 more minutes or until cheese has melted.