Classic French Onion Soup Recipe

Make rich, savory French onion soup with caramelized onions, beef broth, and melted cheese. A comforting, classic recipe for any occasion!

Classic French Onion Soup Recipe 🧅🧀

✔️ Prep Time: 15 minutes
✔️ Cook Time: 50 minutes
✔️ Total Time: 1 hour 5 minutes
✔️ Servings: 4
✔️ Category: Soup
✔️ Cuisine: French

This Classic French Onion Soup is rich, comforting, and topped with a golden, cheesy crust. Slowly caramelized onions, savory broth, and toasted baguette slices make it an irresistible dish. Perfect for a cozy meal!


Ingredients

  • 4 large yellow onions, thinly sliced
  • 3 tbsp unsalted butter
  • 1 tbsp olive oil
  • 1 tsp salt
  • ½ tsp sugar (to enhance caramelization)
  • 3 cloves garlic, minced
  • ½ cup dry white wine (optional)
  • 6 cups beef broth (or vegetable broth for a vegetarian version)
  • 1 tbsp Worcestershire sauce (optional, for added depth)
  • 1 bay leaf
  • ½ tsp fresh thyme (or ¼ tsp dried thyme)
  • Salt & pepper to taste
  • 1 small baguette, sliced
  • 1 ½ cups shredded Gruyère cheese (or Swiss cheese)

Instructions

1. Caramelize the Onions

  • In a large pot, melt butter and olive oil over medium-low heat.
  • Add sliced onions, salt, and sugar. Cook for 30-40 minutes, stirring occasionally, until deeply golden brown and caramelized.

2. Build the Soup Base

  • Add minced garlic and cook for 1 minute.
  • Pour in white wine (if using) and deglaze the pot, scraping up the browned bits.
  • Stir in beef broth, Worcestershire sauce, bay leaf, and thyme. Simmer for 15 minutes.
  • Season with salt and pepper to taste. Remove bay leaf.

3. Prepare the Toasted Baguette

  • Preheat oven to 400°F (200°C).
  • Place baguette slices on a baking sheet and toast for 5 minutes, flipping halfway.

4. Assemble & Broil

  • Ladle soup into oven-safe bowls.
  • Top each bowl with toasted baguette slices and a generous amount of shredded Gruyère cheese.
  • Place under the broiler for 2-3 minutes, until cheese is bubbly and golden.

5. Serve & Enjoy!

  • Let cool slightly and serve warm.

Nutrition Facts (Per Serving)

  • Calories: 380
  • Fat: 18g
  • Protein: 14g
  • Carbohydrates: 40g
  • Fiber: 4g
  • Sodium: 980mg

Find more Recipes:

✅ Classic French Onion Soup
✅ Authentic French Onion Soup Recipe
✅ Best French Onion Soup with Gruyère
✅ Homemade Caramelized Onion Soup
✅ Cozy Winter Soup Recipe


Pro Tips & Variations

Vegetarian option: Use vegetable broth instead of beef broth.
Extra cheesy: Add more Gruyère or mix in Parmesan for a richer topping.
Make ahead: The soup (without cheese and bread) can be made 2 days in advance and reheated before serving.
No broiler? Use a kitchen torch or bake at 450°F for a few minutes.


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