INGREDIENTS
2
sprigs Thyme, fresh
3
lbs Yellow onions
8 cups
Beef broth
1/4 cup
Balsamic vinegar
1/2 tsp
Black pepper, freshly ground
2 1/2 tsp
Kosher salt
2 tbsp
Olive oil
4
Baguette, slices
2 tbsp
Butter, unsalted
1 1/3 cups
Gruyere cheese, grated
1/3 cup
Brandy