INGREDIENTS
2 lb
Onions, medium
3
sprigs Thyme, fresh
4 cups
Beef broth, reduced-sodium
2 tsp
All-purpose flour
1/2 tsp
Black pepper
3/4 tsp
Salt
1/2 stick
Butter, unsalted
1
1 (1/2-lb) piece Gruyere
2 tbsp
Parmigiano-reggiano
3/4 cup
White wine, dry
1 1/2 cups
Water
6
(8- to 10-oz) flameproof soup crocks or ramekins; a cheese plane
6 (1/2-inch-thick) diagonal slices of baguette
2
Turkish bay leaves or 1 california