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French Onion Soup

Recipe by Bon Appétit on YouTubeAdded 2 November 2026.

15 minutes to prep, 1 hour 30 minutes to cook. A classic French onion soup with caramelized onions, a rich mirepoix base, and a comforting topping of toasted bread and melted cheese. The slow cooking deepens the sweet, savory flavors, while a touch of bone marrow adds luxurious richness. Perfect for a cozy dinner.

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Method

  1. Peel and slice the yellow onions.

  2. Slice the bread roll with a sharp knife.

  3. Dice the carrots and celery stalks to create a mirepoix.

  4. Combine the onions, carrots, and celery in a pot and stir regularly as the moisture releases.

    Kitchen notes · Added by ReelsMeals: Onions become translucent and release liquid. Stir occasionally to prevent sticking.

  5. Stir the pot for a second.

  6. Continue stirring until the onions are completely broken down (about 1.5 hours).

    Kitchen notes · Added by ReelsMeals: Onions are very soft and golden. This slow breakdown develops deep flavour.

  7. Add a small amount of bone marrow to the soup and stir.

    Kitchen notes · Added by ReelsMeals: Marrow melts into the soup. Stir until fully incorporated.

  8. Place a slice of bread on top of the soup in each serving bowl.

  9. Place a slice of cheese on top of the bread.

  10. Grate the cheese using a box grater and sprinkle the shredded cheese over the bread.

    Kitchen notes · Added by ReelsMeals: Cheese is evenly distributed. Use a box grater for fine shreds.

  11. Serve hot.

Tips while you cook

Stir regularly
Stir the pot regularly as the moisture releases.
Long simmer
Continue stirring for about 1.5 hours until the onions are completely broken down.
Add bone marrow later
Add the bone marrow after the onions have softened and stir it in.
Top before serving
Place a slice of bread in each bowl, then add shredded cheese on top before serving hot.

Notes from ReelsMeals, based on this recipe's ingredients, times and method. They are not the creator's instructions.

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The recipe comes from Bon Appétit’s YouTube video. ReelsMeals wrote it down from the caption and the voiceover. Check the original if something looks off, and for anything about allergens.

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