Scalloped Potatoes
["4 medium potatoes", "3 Tbsp. butter", "1 c. milk", "1 c. grated cheese", "1/2 tsp. salt", "1/4 tsp. pepper", "2 Tbsp. chopped onion (optional)"]
["Pare potatoes and slice.", "Cook in salted water until slightly tender.", "Drain and arrange in buttered casserole.", "Slice butter over potatoes.", "Add milk to about 3/4-inch the depth of potatoes. Sprinkle with pepper.", "Cover with thick layer of cheese.", "If desired, add onion.", "Bake at 350\u00b0 for 30 to 40 minutes.", "Serves 4 to 6."]
["potatoes", "butter", "milk", "grated cheese", "salt", "pepper", "onion"]