01 -
3 large or 6 medium yellow onions, about 3 pounds.
02 -
6 tablespoons butter (unsalted), split between uses.
03 -
1 teaspoon thyme, dried.
04 -
2 bay leaves, dried.
05 -
2 1/2 teaspoons kosher salt, split.
06 -
1/2 teaspoon ground black pepper.
07 -
3 medium celery stalks.
08 -
3 carrots, medium-sized.
09 -
3 garlic cloves.
10 -
2 pounds of boneless, skinless chicken—breasts or thighs.
11 -
3/4 cup of a white wine that’s dry.
12 -
1 tablespoon sherry, dry.
13 -
1/4 cup basic all-purpose flour.
14 -
6 cups of low-salt chicken broth.
15 -
Half a baguette (for cheesy toasts).
16 -
2 ounces of Gruyère cheese (for topping toasts).