Oven Baked Onion Soup
["4 Tbsp. butter or margarine (1/2 stick)", "6 c. thinly sliced yellow onions", "2 Tbsp. all-purpose flour", "1 1/4 to 1 1/2 qt. beef broth", "1/2 c. dry white wine", "1/2 tsp. salt", "1/2 tsp. freshly ground pepper", "6 slices French bread, toasted", "6 slices Swiss cheese", "1/2 c. freshly grated Parmesan cheese"]
["Melt butter in a large heavy Dutch oven or soup pot.", "Saute onions over medium-low heat, stirring occasionally until light brown.", "Sprinkle flour over the onions; stir into onions.", "Stir in beef broth, wine, salt and pepper.", "Heat to boiling.", "Reduce heat; simmer, uncovered, 10 minutes.", "Place slice of toasted French bread in each of 6 small ovenproof soup dishes.", "Ladle soup over bread.", "Place one slice cheese in each soup dish; sprinkle with Parmesan cheese.", "Bake at 375\u00b0 until cheese melts, about 5 minutes.", "Serve hot.", "Makes 6 servings."]
["butter", "onions", "flour", "beef broth", "white wine", "salt", "freshly ground pepper", "bread", "Swiss cheese", "freshly grated Parmesan cheese"]