Scalloped Potatoes
["8 to 10 medium cooked potatoes, sliced", "6 Tbsp. butter", "2 Tbsp. flour", "1/2 tsp. salt", "1 c. milk", "cheese slices"]
["Melt 2 tablespoons", "butter", "in", "skillet", "over low heat. Add flour and", "salt.", "Continue cooking over low heat, stirring constantly, until smooth.", "Gradually", "add", "milk", "and stir constantly to", "prevent", "lumping.", "Cook", "until", "mixture", "thickens. Place layers of", "potatoes and mixture in buttered baking dish. Dot each layer", "with remaining butter and cheese slices.", "Bake 30 to 35 minutes at 350\u00b0."]
["potatoes", "butter", "flour", "salt", "milk", "cheese slices"]