Sweat in Olive Oil and butter then caramelize:
2 yellow onions and 2 red onions sliced thin
1/4 cup chopped garlic
2 TBS Olive Oil
1/4 cup butter
Add And Reduce:
1 cup dry wine
1/3 cup dry sherry
Stir In: Add and Simmer
3TBS flour
3 Cups Beef Broth
3 Cups Chicken Broth
1 TBS thyme
salt and pepper to taste
8 slice french bread
1 cup gruyere cheese
1/2 cup parmesan
Sweat onion and garlic in oil and butter for 40 minutes. Add wine and sherry, cook until wine evaporates, stirring often.
Stir in flour and cook 1 minute. Add broths, thyme, salt and pepper: bring to simmer and cook another 10 minutes.
Toast bread under broiler. Ladle soup into bowls, arrange on baking sheet and then top with bread and then cheese. Broil another 1-2 minutes or until cheese melts. Enjoy!