🇫🇷 French Cuisine · Soups & Stews

French Onion Soup

Prep

15 mins

Cook

1 hr 15 mins

Serves

4

Difficulty

Medium

Caramelized onions slow-cooked in beef broth, ladled into crocks and blanketed under gratinéed Gruyère.

Ingredients

  • 500g fresh mussels
  • 1 cup brioche
  • 2 tsp sliced leeks
  • 1 1/2 tsp fresh thyme
  • 2 tbsp extra-virgin olive oil
  • 2 button mushrooms, chopped
  • a handful of fresh chervil, chopped
  • a drizzle of crème fraîche
  • 1 cup chicken stock
  • 1 tsp cracked black peppercorns
  • 1 cup shallots, sliced

Instructions

  1. 1

    Heat unsalted butter in a large pot over medium heat and cook the sliced leeks and minced garlic gently until soft and fragrant.

  2. 2

    Stir in the bay leaves and grated nutmeg, toasting briefly until the kitchen fills with their aroma.

  3. 3

    Add the sea bass fillets and shallots, stirring well to coat everything in the spiced base.

  4. 4

    Pour in the beef stock, scraping up any browned bits from the bottom of the pot, and bring to a boil.

  5. 5

    Reduce the heat, cover, and let everything simmer gently until the sea bass fillets is tender, about 1 hr 15 mins.

  6. 6

    Stir in the egg noodles and continue simmering for a few minutes more, until heated through.

  7. 7

    Finish with the Gruyère cheese and adjust the seasoning to taste.

Tips

Taste and adjust the seasoning right at the end — the beef stock reduces as it simmers, concentrating the flavor.

This freezes well; portion into containers and reheat gently on the stovetop for a quick meal later.