Potatoes Au Gratin
["4 medium potatoes, peeled and thinly sliced (about 1 1/2 lb.)", "1 tsp. dried rosemary", "1/4 tsp. pepper", "1 1/2 c. milk", "1 (15 or 16 oz.) envelope chicken gravy mix", "3 Tbsp. grated Parmesan cheese"]
["Place potatoes in a lightly greased 11 x 7 x 1 1/2-inch baking dish. Sprinkle with rosemary and pepper.", "Combine milk and gravy mix.", "Pour over potatoes.", "Sprinkle with Parmesan cheese. Bake at 400\u00b0 for 30 minutes or until tender."]
["potatoes", "rosemary", "pepper", "milk", "chicken gravy mix", "Parmesan cheese"]