Jul 13 2026
RestaurantsGaslight District DinerFrench Onion Soup Recipe

French Onion Soup Recipe

Time1h 20m
Serves6

Topped with melted cheese

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Ingredients

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Soup Base

Method

Soup Preparation

  1. 1

    Prepare the Onions

    Slice the yellow onions into thin half-moons. This will help them caramelize evenly.

  2. 2

    Cook the Onions

    In a large pot, melt the butter and olive oil over medium heat. Add the sliced onions and stir to coat. Cook, stirring occasionally, for about 20-30 minutes until the onions are golden brown and caramelized.

  3. 3

    Add Garlic

    Mince the garlic cloves and add them to the caramelized onions. Cook for an additional 1-2 minutes until fragrant.

  4. 4

    Deglaze the Pot

    Pour in the dry white wine to deglaze the pot, scraping up any browned bits from the bottom. Let it simmer for about 5 minutes until reduced by half.

  5. 5

    Add Broth and Seasonings

    Add the beef broth, thyme, bay leaf, salt, and black pepper to the pot. Bring the mixture to a boil, then reduce heat and let it simmer for 30-40 minutes.

Topping Preparation

  1. 6

    Prepare the Baguette

    While the soup is simmering, slice the French baguette into 1-inch thick slices.

  2. 7

    Toast the Baguette

    Toast the baguette slices in a toaster or under a broiler until they are golden brown on both sides.

  3. 8

    Add Cheese to Soup

    Once the soup is ready, remove the bay leaf. Ladle the soup into oven-safe bowls, top each bowl with a toasted baguette slice, and then sprinkle with gruyère and parmesan cheese.

  4. 9

    Broil the Soup

    Place the bowls under the broiler for about 3-5 minutes, or until the cheese is melted and bubbly.

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