INGREDIENTS
1 1/2 lb
onion ((about 3 large onions), thinly sliced)
3 tbsp
butter
1/4 tsp
granulated sugar
1/4 tsp
salt
2 tbsp
all-purpose flour
6 cups
low-sodium beef broth
1/2 cup
white wine
1/2 tsp
dried thyme
1
piece celery (just a small chunk, not the whole rib)
2
bay leaves
8
slice French Baguette
4 tbsp
butter (melted)
2 cloves
garlic (, halved)
1 cup
Gruyère cheese (, fresh grated)
1/3 cup
freshly grated parmesan cheese