RECIPE

French Onion Soup with Porcini

Bubbling cheese toast introduces this warm and wonderful onion-porcini soup. Save some broth to serve for another meal.

Ingredients

  • 1 stick butter, divided
  • 4 large onion, very thinly sliced
  • 1 teaspoon ground thyme
  • Salt and freshly ground black pepper
  • 1 ounce dried porcini mushrooms
  • 1/4-1/3 cup dry sherry
  • 1 cup white wine
  • 1 small bundle of a combination of fresh flat leaf parsley, a few sprigs of fresh sage and fresh bay leaves
  • 2 quarts beef stock
  • 1 baguette, sliced into 8 1/2-inch-thick slices
  • 1 large clove garlic, peeled and halved
  • 1 1/2 cups grated Gruyère cheese
  • 1/2 cup grated Parmigiano Reggiano cheese

Preparation

Heat a large Dutch oven over medium heat. Add 6 tablespoons of the butter and let it melt. Stir in the onion and the thyme and season with salt and pepper, to taste. Cook, stirring occasionally, until the onion caramelizes, about 40-45 minutes.

Meanwhile, put the mushrooms in a small pot and cover with a couple of cups of water. Bring to a boil over high heat, then reduce the heat to low and simmer to reconstitute the mushrooms.

Add the sherry to the pot with the onions to deglaze the pan, then stir in the wine. Remove the mushrooms from their broth with a slotted spoon to a cutting board. Chop them, and add them to the onion. Add all but the last 1/2 cup of the mushroom liquid to the soup, about 1 cup. Add the herb bundle and the beef stock to the pot and simmer the soup for 30-45 minutes. Cool and refrigerate for a make-ahead meal. Reheat over medium heat, covered, and prepare the croutons when ready to serve.

Heat the oven to 425°F. Toast the bread on a rack over a baking sheet, until deep golden brown. Butter the bread, using the 2 tablespoons of remaining butter, and liberally rub with the cut garlic. Top the toasts with the cheeses and return them to the oven until the cheese is melted and bubbly. For a more dramatic presentation, the toasts may be arranged on top of crocks of soup, put on a baking sheet, then topped with cheese and baked to brown.

Ladle the soup into serving bowls and serve with the cheese toasts.

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