Description
A rich and comforting classic French onion soup with caramelized onions, savory beef broth, and topped with melted cheese over toasted bread. Perfect for cozy dinners.
Ingredients
Scale
- 4 large yellow onions, thinly sliced
- 3 tbsp unsalted butter
- 1 tbsp olive oil
- 2 cloves garlic, minced
- 1 tsp sugar
- 1 tsp salt
- 1/2 tsp black pepper
- 2 tbsp all-purpose flour
- 8 cups beef broth
- 1/2 cup dry white wine (optional)
- 1 tsp fresh thyme or 1/2 tsp dried thyme
- 1 bay leaf
- Baguette slices, toasted
- 1 1/2 cups grated Gruyère or Swiss cheese
Instructions
- In a large pot, melt butter with olive oil over medium heat. Add onions, sugar, salt, and pepper. Cook, stirring occasionally, until onions are deeply caramelized, about 30–40 minutes.
- Add garlic and cook for 1–2 minutes more.
- Stir in flour and cook for 1–2 minutes to remove raw taste.
- Gradually add beef broth and wine (if using), stirring constantly. Add thyme and bay leaf.
- Bring to a simmer and cook for 20–25 minutes. Remove bay leaf.
- Preheat oven broiler. Ladle soup into oven-safe bowls, top with toasted baguette slices, and sprinkle with grated cheese.
- Broil until cheese is melted and bubbly, about 2–4 minutes. Serve hot.
Notes
For a vegetarian version, use vegetable broth instead of beef broth. Gruyère can be substituted with Swiss or mozzarella cheese.
- Prep Time: 15 minutes
- Cook Time: 1 hour
- Category: Soup
- Method: Stovetop and Broil
- Cuisine: French
Nutrition
- Serving Size: 1 bowl
- Calories: 310
- Sugar: 10g
- Sodium: 850mg
- Fat: 16g
- Saturated Fat: 10g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 28g
- Fiber: 3g
- Protein: 12g
- Cholesterol: 45mg
Keywords: classic french onion soup, onion soup, comfort food, cheesy soup