Green Bean Supreme
["1/3 c. onion, chopped", "2 Tbsp. margarine", "2 Tbsp. flour", "1 tsp. salt", "1/4 tsp. pepper", "1 c. sour cream", "2 c. frozen green beans (French-style), cooked", "1 small pkg. potato chips, crushed", "1 can French fried onion rings, chopped"]
["Cook onion in margarine.", "Mix flour, salt, pepper and sour cream to make a sauce.", "Stir in beans and put in casserole dish. Sprinkle with potato chips and top with onion rings.", "Bake at 350\u00b0 for 15 to 20 minutes."]
["onion", "margarine", "flour", "salt", "pepper", "sour cream", "frozen green beans", "potato chips", "onion rings"]