1. What is French onion soup?

French onion soup is a traditional French dish made from caramelized onions simmered in beef or chicken broth, typically topped with a slice of toasted bread and melted cheese. It's known for its rich, savory flavor and comforting qualities.

2. What do the French call French onion soup?

In France, French onion soup is called "soupe à l'oignon." Despite its name, the dish is a staple in French cuisine and is enjoyed by both locals and visitors.

3. Is French onion soup popular in France?

Yes, French onion soup is a beloved dish in France. While it may not be as commonly consumed as some other French dishes, it remains a classic and cherished part of French culinary tradition.

4. How is French onion soup traditionally prepared?

The preparation involves slowly caramelizing sliced onions in butter or oil to develop a deep, sweet flavor. The onions are then simmered in broth, often with a splash of wine or brandy, and seasoned with herbs. The soup is served hot, topped with a slice of toasted bread and melted cheese.

6. Can French onion soup be made ahead of time?

Yes, French onion soup can be prepared in advance. The soup can be made up to the point of adding the cheese-topped bread. When ready to serve, reheat the soup, add the bread and cheese, and broil until the cheese is melted and bubbly.

French Onion Soup Recipe: Easy, Cheesy, and Full of Flavor

Ingredients

Scale

4 large yellow onions, thinly sliced
3 tbsp unsalted butter
1 tbsp olive oil
2 cloves garlic, minced
6 cups beef broth (or vegetable broth for vegetarian option)
1/2 cup dry white wine (optional)
1 tsp balsamic vinegar or Worcestershire sauce
1 tsp fresh thyme (or 1/2 tsp dried thyme)
1 bay leaf
Salt and black pepper to taste
1 baguette, sliced and toasted
1 1/2 cups Gruyère cheese, shredded (Parmesan or Swiss can be substituted)

Instructions

Caramelize the Onions: In a large pot or Dutch oven, melt butter with olive oil over medium heat. Add sliced onions and a pinch of salt. Cook, stirring occasionally, for 30-40 minutes until deep golden brown and caramelized.
Add Garlic and Deglaze: Stir in the minced garlic and cook for about 1 minute. Pour in the white wine, scraping the bottom of the pot to deglaze. Let it simmer for 2-3 minutes until slightly reduced.
Simmer the Soup: Add beef broth, balsamic vinegar, thyme, bay leaf, salt, and pepper. Bring to a gentle simmer and cook for 20-30 minutes.
Prepare the Topping: While the soup simmers, preheat the oven broiler. Toast baguette slices until golden.
Assemble and Broil: Ladle the soup into oven-safe bowls, place a toasted baguette slice on top, and sprinkle generously with Gruyère cheese. Broil for 2-3 minutes until the cheese is bubbly and golden brown.
Serve: Carefully remove from the oven, let cool slightly, and enjoy!

Notes

Caramelizing the onions properly is key to the soup’s deep flavor—don’t rush this step.
If you prefer a vegetarian version, use vegetable broth and replace Worcestershire sauce with soy sauce or tamari.
Experiment with different cheese blends for a unique flavor.

Author: Anna Gomez
Prep Time: 10 minutes
Cook Time: 50 minutes
Category: Soup
Method: Stovetop & Broiler
Cuisine: French
Diet: Vegetarian

Nutrition

Serving Size: Per Serving
Calories: 280
Sugar: 6g
Sodium: 750mg
Fat: 16g
Carbohydrates: 22g
Fiber: 3g
Protein: 8g
Cholesterol: 40mg

Keywords: French Onion Soup, caramelized onions, Gruyère cheese, comfort food, classic French recipe, beef broth, toasted baguette, homemade soup