That is the Recipe. Very simple. There are different methods to Caramelize the Onions but a Big Pan and frequent Stirring, over medium/high heat gives a good result. 1 Stick of Butter and 5 Lbs thin sliced Onions. Stir periodically until the water cooks out and you see a Brown Fond building on the bottom of the pan. Take a 1/2C of the Broth and Deglaze. Continue cooking till you get more Fond, Deglaze and repeat until the Onions are Soft, Brown and looking good. Add the Onions to the rest of the Broth. The Boxes of Broth are 6 cups so 2 Beef and 2 Chicken. Add about 5-6 Sprigs of Fresh Thyme and a 1/2tsp Fresh Grated Nutmeg. Bring to a Simmer and simmer 1 hour. Add Salt and Pepper to taste.
Laddle into Oven Safe Bowls. Float a 1/2 -1" slice of toasted French Bread on the soup. Top with Gruyere, Provolone, Swiss or Mozzarella. We literally use 4 ounces of Cheese per serving. Mozzarella is easy as you just slice a 1 pound blocks into 4 slices!
Place the bowls under the Broiler and Brown the cheese. Be Careful, the Bowls are now STUPID HOT! We carefully slide each Crock onto a dinner plate and Serve, with extra Bread and Butter. Add a Salad and that's the whole meal...JJ