Ingredients
- Soup
6 large yellow onions (about 4 pounds), halved and cut pole to pole into 1/4-inch-thick slices (see illustration below)
Table salt
3 tablespoons unsalted butter , cut into 3 pieces
2 cups water , plus extra for deglazing
1/2 cup dry sherry
4 cups low-sodium chicken broth (see note)
2 cups beef broth (see note)
6 sprigs fresh thyme , tied with kitchen twine
1 bay leaf
Ground black pepper
Cheese Croutons
1 small baguette , cut into 1/2-inch slices
8 ounces shredded Gruyère cheese (about 2 1/2 cups)
Description
From America's Test Kitchen
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