- 14g unsalted butter
- 1 teaspoon extra-virgin olive oil
- 475g yellow onions, peeled, halved, and thinly
- 6 shallots, thinly
- 1 leek, white and light green part thinly , washed well, and dark green top reserved
- Salt and freshly ground black pepper
- 3 to 4 fresh thyme sprigs
- 1 fresh rosemary sprig
- 1 tablespoon plain flour
- 1L low-sodium beef broth
- 500ml water
- 2 teaspoons Worcestershire sauce
- 62ml dry sherry
- 8 (¼-inch thick) whole-wheat baguette, toasted
- 80g finely Gruyere
- 1 tablespoon fresh chives
How to make French Three Onion Soup
We took the best part of this classic soup, all the sweet caramelized onions, and left behind all the fat. By steaming the onions to get the caramelization started, you can eliminate the need for almost all the fat. A small sprinkling of a good cheese at the end goes a long way.
Heat the butter and oil together in a Dutch oven over medium heat. Add the onions, shallots and leek, and season with salt and pepper, to taste. Stir to combine and cover. Cook, without stirring until the onions are soft and beginning to brown, about 10 to 15 minutes.
Uncover, and continue to cook, stirring often, until the onions are a rich brown color and well caramelized, about 25 to 30 minutes. (If the onions begin to stick to the bottom of the pan or burn add about a 1 tablespoon water at a time.) Meanwhile, tie the reserved leek top with the thyme and rosemary using a piece of kitchen twine.
Sprinkle the flour over the onions and cook, stirring, to cook out the raw flour taste, about 2 to 3 minutes. Stir in the broth and 2water, scraping any browned bits from the bottom of the pan; add the herb bundle. Reduce the heat and simmer until thickened, 20 to 25 minutes. Stir in the Worcestershire and remove from the heat. Discard the herb bundle, stir in the sherry and season, to taste, with salt and pepper.
Preheat the grill. Divide the soup between 4 oven proof bowls or ramekins and arrange them on a baking sheet. Top each bowl evenly with 2 baguetteand top with the cheese. Put under the grill until the cheese is melted and lightly browned, about 1 minute. Sprinkle with the chives and serve.
Serving suggestion: Turn this rich soup into a full meal with a salad of baby mixed greens,endive and beets with a lemon vinaigrette.
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