Scalloped Potatoes
["3 Tbsp. butter", "2 Tbsp. flour", "3 c. milk", "6 to 7 medium potatoes", "1/2 c. onions", "1/4 tsp. pepper", "4 slices cheese"]
["Make white sauce out of butter, flour, milk, onions and cheese.", "Cook until cheese is melted.", "Pour sauce over sliced potatoes.", "Add pepper and bake for 45 minutes, covered.", "Uncover and put more cheese on top of potatoes.", "Cook until lightly browned."]
["butter", "flour", "milk", "potatoes", "onions", "pepper", "cheese"]