INGREDIENTS
3 tbsp
unsalted butter
3
very large yellow or Spanish onions, halved and sliced 1/4 inch thick (about 2 1/2 pounds)
2 cloves
garlic, minced (about 2 teaspoons)
2
springs fresh thyme
1
bay leaf
1/2 cup
dry red wine, such as Cabernet Sauvignon
4
cartons Kitchen Basics Beef Bone Broth
4 cups
Kitchen Basics Beef Stock
3/4 tsp
kosher salt
1/2 tsp
freshly ground black pepper
8
to 12 small baguette slices, cut about 3/4-inch thick
4 oz
freshly grated Gruyère cheese (white cheddar, fontina, and gouda, while less traditional, are also delicious)