INGREDIENTS
1/4 cup
unsalted butter
5
yellow onions, thinly sliced
3
garlic cloves, chopped
2
bay leaves
3
fresh thyme sprigs
Kosher salt and freshly ground black pepper
1 cup
red wine
3 tbsp
all-purpose flour
2 qt
beef broth
1
baguette, sliced
1/2 lb
grated Gruyere