Baked French Onion Soup

3 oz. butter
5 large onions, thinly sliced
1 clove garlic, crushed
3 cups beef broth*
3 cups chicken broth
1 Tbs. white wine
Peel onions, cut in half and thinly slice into semi-circles. Sauté onions and garlic in butter over medium-low heat. The onions need to cook slowly, as they turn brownish their sugars will naturally be released and add a vast amount of flavor. Add remaining ingredients and bring to a slow boil.
Ladle carefully into oven safe crocks. Top with croutons, Swiss cheese and parmesan cheese. Bake in 350F/177C degree oven for 10 minutes. Nice served with toasted French bread.
Makes about 8 serving depending on the capacity of the crocks.
*Vegetarian substitute 6 cups vegetable broth
*You can also use all beef broth, substitute port wine