French Green Bean Casserole
["1/3 c. chopped onion", "2 Tbsp. butter", "2 Tbsp. flour", "1 c. sour cream", "3 cans drained French-style green beans", "1 c. shredded cheese", "1/2 tsp. salt", "1/2 tsp. pepper"]
["Saute onion in butter.", "Add salt, pepper, flour and sour cream.", "Cook until slightly thickened.", "Add drained green beans; top with cheese.", "Bake at 350\u00b0 for 20 minutes.", "Yields 12 servings."]
["onion", "butter", "flour", "sour cream", "green beans", "shredded cheese", "salt", "pepper"]