Classic French Onion Soup Gratinée

January 16, 20261 hr read

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Rich beef broth, caramelized onions, and a crusty baguette slice topped with melted gruyère. Elegant and comforting.

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French Onion Soup

The key to this soup is patience. Caramelizing the onions slowly transforms them into sweet, golden perfection.

French Onion Soup

Ingredients

  • 5 large onions, thinly sliced
  • 3 tbsp butter, 1 tsp sugar
  • 6 cups beef broth, 1/2 cup white wine
  • Baguette slices, 2 cups gruyère cheese.

Instructions

  1. Cook onions in butter on low heat for 45-60 mins until deep brown.
  2. Deglaze pan with wine. Add broth and simmer.
  3. Ladle soup into oven-safe bowls.
  4. Top with bread slice and mound cheese on top.
  5. Broil until cheese is bubbly and browned.
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Sarah Ait Dahan - Sweety's Bakery

Sarah Aitdahan

Sarah Aitdahan is the founder of Sweety's Bakery and the creator of this website. A lifelong baker with a passion for perfecting the classics, she believes that baking should be accessible and joyful for everyone. This website is her way of giving back to the incredible baking community by providing free tools, resources, and recipes.

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