INGREDIENTS
4 tbsp
butter
3 lb
onions
1/2 tsp
coarse salt
6 cups
chicken stock
1 3/4 cups
beef stock
1/4 cup
wine
2 sprigs
parsley
1 sprig
thyme
1
bay leaf
1 tbsp
balsamic vinegar
1 serving
salt and pepper
1
baguette
4 1/2 oz
gruyere cheese
3 oz
asiago cheese
72 oz
soup bowls that are oven and broiler safe