Au Gratin Potatoes and Ham

10 potatoes, thinly sliced
1 onion, chopped
2 T. flour
1/4 tsp. pepper
1/2 lb. low-fat velveeta cheese, cubes
1/2 cup milk
1/2-1 cup cooked, diced ham

Combine all ingredients in slow cooker, which has been sprayed with Pam. Cover, cook on low 7-8 hours.

Makes 6-8 servings.