INGREDIENTS
2
Bay leaves
3 cloves
Garlic
3
lbs Sweet onions
4
sprigs Thyme, fresh
6 cups
Beef stock
2 tsp
Balsamic vinegar
1
Kosher salt and freshly ground black pepper
12 3/4
inch French baguette, thick slices
1/4 cup
Butter, unsalted
1 1/2 cups
Gruyere cheese
1/2 cup
Parmesan
1/3 cup
White wine, dry