Ingredients
- 4 large yellow onions (sliced thinly)
- 4 tablespoons unsalted butter (for sautéing)
- 1 teaspoon sugar (to enhance caramelization)
- 8 cups beef broth (or vegetable broth for a vegetarian option)
- 1 cup dry white wine (adds depth of flavor)
- 2 teaspoons fresh thyme (or 1 teaspoon dried thyme)
- 1 bay leaf (for added flavor)
- 8 slices French baguette (for topping)
- 2 cups grated Gruyère cheese (for melting on top)
- salt to taste
- pepper to taste
Instructions
6 steps
Caramelize the Onions
In a large pot, melt the butter over medium heat. Add the sliced onions and sugar. Cook for 30-40 minutes, stirring frequently, until the onions are golden brown and caramelized.
Low and slow is the key to perfect caramelized onions.Add Liquid Ingredients
Pour in the white wine and scrape the bottom of the pot to deglaze. Cook for another 5 minutes until the wine reduces slightly.
Use a good quality wine for the best flavor.Add Broth and Seasoning
Add the beef broth, thyme, bay leaf, salt, and pepper. Bring to a boil, then reduce heat and simmer for 30 minutes.
Adjust seasoning to your taste before serving.Prepare the Bread Topping
While the soup simmers, preheat your oven to 350°F (175°C). Place the baguette slices on a baking sheet and toast them in the oven until golden brown.
You can broil them for a minute for extra crispiness.Serve the Soup
Remove the bay leaf from the soup. Ladle the soup into oven-safe bowls, top with toasted baguette slices, and sprinkle with Gruyère cheese.
Make sure the cheese is generously layered for a gooey finish.Broil to Finish
Place the bowls under the broiler for 2-3 minutes or until the cheese is bubbly and golden brown.
Watch closely to prevent burning.
💡 Tips & Tricks
Storage & Reheating
Refrigerator
Up to 4 days in an airtight container
Freezer
Up to 3 months — thaw overnight in fridge
Reheat on the stovetop over medium heat, stirring occasionally. Add a splash of water or broth if it has thickened.
What to Serve With
Complete your french meal with these perfect pairings:
About This Dish
Authentic French Onion Soup Recipe - Classic Comfort Dish is a beloved dish from French cuisine.
French cuisine is considered one of the world's finest culinary traditions. Known for its refinement and attention to detail, it has influenced cooking around the globe for centuries.
This recipe is rated medium difficulty and uses 11 ingredients. Intermediate cooks will enjoy the balanced challenge.
Frequently Asked Questions
Yes, you can prepare the soup base a day in advance and reheat it before adding the cheese and bread.
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Nutrition Facts
4 serving(s) per recipe
* Percent Daily Values are based on a 2,000 calorie diet. Values are approximate and may vary based on ingredients used.
