Teenagers Favorite Taco Casserole
["1 lb. ground beef", "1 onion, chopped", "1 (16 oz.) can refried beans", "1 small can black olives", "1 small can diced green chilies", "2 c. shredded Cheddar cheese", "1 (8 oz.) jar taco sauce", "sour cream", "chopped green onions"]
["In a skillet, cook ground beef and onions until beef is browned and onion is tender; drain.", "In a greased 9 x 13-inch dish, spread refried beans; sprinkle beef mixture over beans.", "Add layers of olives (reserving some for garnish), green chilies and cheese.", "Spread taco sauce over all.", "Bake at 400\u00b0 for 25 to 30 minutes."]
["ground beef", "onion", "beans", "black olives", "green chilies", "Cheddar cheese", "taco sauce", "sour cream", "green onions"]