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Brasserie French Onion Soup Recipe Easy Caramelised Onion Broth for Busy Weeknights

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A cozy, brasserie-style French onion soup with a rich caramelized onion broth that comes together quickly for busy weeknights. This recipe balances deep flavor with practicality, perfect for an elegant yet easy dinner.

Ingredients

Scale
  • 6 large yellow onions (about 900g / 2 lbs)
  • 3 tablespoons unsalted butter (42g)
  • 1 tablespoon olive oil (15ml)
  • 2 garlic cloves, minced
  • ½ cup dry white wine (120ml) (optional)
  • 6 cups beef broth (1.4 liters) (low-sodium recommended)
  • 1 teaspoon dried thyme
  • 1 bay leaf
  • Salt and freshly ground black pepper, to taste
  • 8 slices baguette (about ½ inch thick)
  • 1½ cups shredded Gruyère cheese (150g)

Instructions

  1. Preheat your oven’s broiler on high. Slice the onions thinly and set aside. Line a baking sheet with foil for toasting the baguette slices later.
  2. Heat the butter and olive oil in your Dutch oven over medium heat. Add the sliced onions and stir to coat. Cook, stirring every 5 minutes, letting the onions soften and turn golden. After about 20 minutes, add the minced garlic and cook another 2-3 minutes until fragrant.
  3. Pour in the white wine (or broth and lemon juice if skipping wine), scraping up the brown bits stuck to the pan with your spatula. Let it reduce for 2 minutes to concentrate flavor.
  4. Add the beef broth, thyme, and bay leaf. Bring to a gentle simmer and cook uncovered for 15 minutes. Season with salt and pepper gradually—taste as you go.
  5. While the broth simmers, arrange your baguette slices on the foil-lined baking sheet and toast under the broiler until golden and crisp. Keep a close eye so they don’t burn.
  6. Ladle the hot soup into oven-safe bowls. Place toasted baguette slices on top, then pile on a generous handful of shredded Gruyère cheese.
  7. Place the bowls under the broiler until the cheese melts, bubbles, and starts to brown—watch closely, it happens fast!
  8. Carefully remove from oven (the bowls will be hot!), let cool for a minute, and serve immediately.

Notes

Use medium heat and patience to caramelize onions to avoid burning and bitterness. Scrape the fond when deglazing for extra flavor. Salt gradually to help onions caramelize properly. Watch the broiler closely to prevent cheese from burning. For vegetarian version, use vegetable broth and vegan-friendly wine and cheese substitutes. Soup tastes better the next day as flavors meld. Leftover broth freezes well.

Nutrition

Keywords: French onion soup, caramelized onion broth, easy French soup, weeknight dinner, brasserie style, comfort food

Find it online: https://novanosh.com/brasserie-french-onion-soup-recipe-easy-caramelised-onion-broth-for-busy-weeknights/