Potatoes Au Gratin
["3 qt. cubed potatoes", "1 c. diced onion", "5 to 6 Tbsp. oleo", "4 to 5 Tbsp. flour", "2 c. milk", "cheese"]
["Cook potatoes and onion until tender.", "Make a medium to thick white sauce.", "Melt oleo; add flour.", "Blend.", "Add milk, salt and pepper to taste.", "Cook until thick.", "Combine with drained, cooked potatoes and onions; stir, then place in large casserole.", "Top generously (1/4-inch thick) with good melting cheese (such as Longhorn).", "Bake in 375\u00b0 oven until cheese melts and potatoes are bubbly."]
["potatoes", "onion", "oleo", "flour", "milk", "cheese"]