French Onion Soup
["4 large onions, thinly sliced and separated", "1/2 c. margarine", "1 Tbsp. flour", "1 (10 3/4 oz.) can beef broth, undiluted", "1 (10 3/4 oz.) can chicken broth, undiluted", "2 c. water", "1/4 c. red or white wine", "1/8 to 1/4 tsp. black pepper", "8 (3/4-inch thick) slices French bread", "8 slices Mozzarella cheese", "1/2 c. grated Parmesan cheese"]
["Saute onions in margarine in a Dutch oven until tender.", "Blend in flour, stirring until smooth. Gradually add chicken broth, beef broth, water and wine. Bring to a boil.", "Reduce heat and simmer 15 minutes. Add pepper."]
["onions", "margarine", "flour", "beef broth", "chicken broth", "water", "red", "black pepper", "bread", "Mozzarella cheese", "Parmesan cheese"]