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French Onion Soup Recipe


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  • Author: Clara Bennett
  • Total Time: 1 hour 15 minutes
  • Yield: 4 1x
  • Diet: Vegetarian

Description

French Onion Soup – a comforting, elegant, and deeply flavorful soup that warms both the kitchen and your heart. This recipe transforms simple ingredients into a rich, savory, and slightly sweet bowl of bliss. Caramelized onions, slow-simmered in broth with a hint of wine, topped with toasted baguette and melted Gruyère cheese, create a symphony of flavors. Perfect for a cozy night in or an impressive starter for guests, this soup delivers classic French comfort in every spoonful.


Ingredients

Scale
  • 45 large yellow onions, thinly sliced
  • 2 tablespoons butter
  • 1 tablespoon olive oil
  • 2 cloves garlic, minced
  • 4 cups beef or vegetable broth
  • 1/2 cup dry white wine or sherry
  • 12 bay leaves
  • Salt and freshly ground black pepper, to taste
  • 1 baguette, sliced
  • 12 cups grated Gruyère cheese
  • Optional: fresh thyme for garnish


Instructions

  • Peel and thinly slice the onions.
  • Melt butter with olive oil in a heavy-bottomed pot over medium heat. Add onions and a pinch of salt. Cook slowly, stirring occasionally, until deep golden brown (30–40 minutes).
  • Add garlic and cook for 1 minute. Deglaze the pot with wine, scraping up browned bits.
  • Add broth and bay leaves. Simmer 10 minutes. Adjust seasoning.
  • Preheat oven to broil. Ladle soup into oven-safe bowls, place toasted baguette slices on top, and cover with grated Gruyère.
  • Broil until cheese is bubbly and golden. Serve immediately, optionally garnished with thyme.

Notes

  • Use medium-low heat for onions to avoid bitterness.
  • For vegetarian version, use vegetable broth and add a dash of soy sauce for umami.
  • Toast bread lightly before topping to prevent sogginess.
  • Watch cheese carefully under the broiler to avoid burning.
  • Prep Time: 20 minutes
  • Cook Time: 55 minutes
  • Category: Soup
  • Method: Stove + Oven Broil
  • Cuisine: French

Nutrition

  • Serving Size: 4
  • Calories: 320
  • Sugar: 10g
  • Sodium: 720mg
  • Fat: 18g
  • Saturated Fat: 10g
  • Unsaturated Fat: 7g
  • Trans Fat: 0g
  • Carbohydrates: 28g
  • Fiber: 3g
  • Protein: 12g
  • Cholesterol: 35mg