2 lbs. potatoes (about 6 medium)
1/4 t. pepper
3 T. butter
1 small onion, thinly sliced (optional)
1 can cream of mushroom soup - (10 oz.)

3/4 cup milk
1/4 C. flour
1 t. salt
4 slice American cheese

Peel and thinly slice potatoes. Put sliced potatoes in greased CROCK-POT. Top with  onion slices. .  Add butter and undiluted soup.  Mix flour and milk together and pour over soup.  You can layer diced ham with the potatoes, or you can place pork chops on top of the soup/potatoes and cook.  If you place pork chops on top then you can eliminate the cheese during the last 30 minutes if you want too.

Cover and cook on LOW 7 to 9 hours (HIGH:  3 to 4 hours).  Add cheese slices 30 minutes before serving.