Jul 14 2026
RestaurantsCaffe Gelato RestaurantFrench Onion Au Gratin Gfp Recipe

French Onion Au Gratin Gfp Recipe

Time1h 10m
Serves6

Make French Onion Au Gratin Gfp Recipe in just 1h 10m. Get the full recipe with step-by-step instructions at pekinthechef.com.

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Ingredients

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Onion Preparation

Method

Onion Preparation

  1. 1

    Caramelize the Onions

    In a large pot over medium heat, melt the unsalted butter. Add the sliced yellow onions, salt, and sugar. Cook, stirring frequently, until the onions are caramelized and golden brown, about 30-40 minutes.

Soup Base

  1. 2

    Add Broth and Seasoning

    Once the onions are caramelized, add the minced garlic and sauté for an additional 2 minutes. Pour in the beef broth and dry white wine. Add the chopped thyme and black pepper. Bring the mixture to a simmer and cook for about 15 minutes to allow the flavors to meld.

Assembly and Baking

  1. 3

    Prepare Bread and Cheese

    While the soup is simmering, preheat your oven to 400°F (200°C). Arrange the baguette slices on a baking sheet and toast them in the oven for about 5-7 minutes or until they are slightly crispy.

  2. 4

    Assemble the Gratin

    Ladle the soup into oven-safe bowls or ramekins. Place the toasted baguette slices on top of the soup, then generously sprinkle with Gruyère and Parmesan cheese.

  3. 5

    Bake the Gratin

    Place the assembled bowls on a baking sheet and bake in the oven for 10-15 minutes, or until the cheese is melted and bubbly. For an extra golden top, you can broil for an additional 2-3 minutes.

  4. 6

    Garnish and Serve

    Remove from the oven and let cool slightly. Garnish with chopped fresh parsley before serving.

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