Two-Onion Soup Gratinée - cooking recipe

Ingredients
    3 tablespoons olive oil
    4 large red onions, thinly sliced
    4 medium yellow onions, thinly sliced
    1/4 teaspoon sugar
    7 cups beef or 7 cups chicken stock
    2 garlic cloves, minced
    1 bay leaf
    1/2 cup dry white wine
    1/4 teaspoon dried thyme
    1 teaspoon salt
    black pepper (to taste)
    3/4 cup shredded swiss cheese or 3/4 cup gruyere cheese
    12 slices baguette, each 1/4 thick
    2 tablespoons finely chopped fresh flat-leaf Italian parsley
Preparation
    In a large pot or Dutch oven over medium heat, heat the olive oil. Add the onions and saute until wilted. Add the sugar and continue cooking, stirring frequently, until the onions are richly colored and caramelized. (If they brown too quickly toward the beginning of the caramelizing process, reduce the heat.).
    Preheat oven to 350 degrees.
    Add the stock, bay leaf, salt, pepper, and wine to the pot. Cover partially and simmer until the flavors are well blended, at least 30 minutes.
    Meanwhile, toast the baguette slices: Arrange slices in a single layer on a baking sheet and toast in the oven until golden, watching carefully to prevent burning, 5-7 minutes.
    Add the thyme to the soup and season to taste with more salt or pepper. Discard the bay leaf.
    To serve, preheat the broiler. Ladle the soup into individual ovenproof soup bowls. Place 2 or 3 baguette slices on top of each serving and sprinkle evenly with cheese. Broil approximately 4\" from heat source in the oven. Broil until cheese is bubbly and lightly browned, 3-4 minutes. Serve at once.

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