Creamy Crock-Pot Potatoes - cooking recipe

Ingredients

6 medium thinly sliced potatoes
1 c. water
1/2 tsp. cream of tartar
1 small onion, chopped
1/4 c. flour
1 tsp. salt
1/4 tsp. pepper
2 Tbsp. butter
1 can cream of mushroom soup

Preparation

Toss potato slices in 1 cup water and 1/2 teaspoon cream of tartar. Drain and put half of potatoes in greased crock-pot. Top with half of onion, flour, salt and pepper.
Layer with potatoes and onion, salt, pepper and flour again. Pour soup and butter on top. Cover and cook on low 7 to 9 hours or on high 2 to 4 hours. Add 4 slices American cheese to top 30 minutes before serving.