French Onion Soup
["1/4 c. olive oil", "1/4 c. butter or margarine", "8 medium onions, thinly sliced and separated into rings", "6 c. beef broth", "2 Tbsp. sugar", "1/4 tsp. pepper", "3/4 tsp. salt", "4 to 5 slices toasted French bread", "1 (6 oz.) pkg. Mozzarella cheese, sliced and cut in halves", "grated Parmesan cheese"]
["Combine oil and butter in a large Dutch oven. Heat until butter melts.", "Add onions and saute until tender. Add broth, sugar, salt and pepper. Bring to a boil. Reduce heat and simmer soup mixture 20 minutes.", "Place toasted bread in individual soup bowls.", "Add soup and top with cheese slice.", "Sprinkle with Parmesan cheese."]
["olive oil", "butter", "onions", "beef broth", "sugar", "pepper", "salt", "bread", "Mozzarella cheese", "Parmesan cheese"]