Quick Potatoes Au Gratin
["4 c. peeled and thinly sliced potatoes", "1/2 c. chopped green onion", "2 Tbsp. butter", "3 Tbsp. flour", "2 c. milk", "salt and pepper to taste", "2 c. grated Cheddar cheese"]
["Preheat oven to 350\u00b0.", "Lightly grease a casserole dish. Layer potatoes with onion in dish.", "Melt butter in microwave in a microwave-safe bowl.", "Add flour, salt and pepper.", "Stir; add milk. Heat in microwave on High for 4 minutes.", "Stir.", "Return to microwave for 1 1/2 minutes.", "Stir again.", "Pour over potatoes. Bake in oven at 350\u00b0 for 1 hour (or until potatoes are tender). Top with grated cheese."]
["potatoes", "green onion", "butter", "flour", "milk", "salt", "Cheddar cheese"]