Recipe Information

• Servings: 4
• Preparation Time: 15 minutes
• Cooking Time: 40 minutes
• Total Time: 55 minutes
• Difficulty: Easy

Ingredients

• For the Soup:
  • 850 g Roscoff onions (or any sweet variety)
  • 100 g unsalted butter
  • 1 L chicken broth
  • 4 tablespoons all-purpose flour
  • Stale baguette, cut into slices
  • 100 g Emmental cheese (preferably raw milk Swiss)
  • Salt and freshly ground black pepper to taste

Instructions

1. Peel the onions and finely slice them into brunoise (small dice).
2. In a large pot, melt the butter over low heat, add the sliced onions, and sauté them slowly, stirring occasionally for 20-30 minutes until they turn golden brown and caramelized.
3. Add the flour and mix well, cooking for 1-2 minutes to eliminate the raw flour taste.
4. Gradually pour in the chicken broth while stirring continuously. Keep stirring until the soup thickens slightly as it heats up.
5. Season the soup with salt and freshly ground pepper to taste. For added flavor, feel free to stir a bit of Emmental cheese into the soup.
6. Preheat the oven’s broiler.
7. Slice the stale baguette into 1.5 cm thick pieces.
8. Place the baguette slices on a baking tray, sprinkle generously with Emmental cheese, and place under the broiler until the cheese is bubbly and golden brown.
9. Serve the soup hot, topped with the cheesy baguette slices as a delicious garnish.

Notes

This soup can be made ahead of time and reheated. Store any leftovers in an airtight container in the refrigerator for up to three days.

Recipe Tips

• For an even more flavorful soup, consider using homemade chicken broth.
• If you prefer a vegetarian version, swap the chicken broth for vegetable broth.
• Experiment with different cheeses; Gruyère is another excellent choice for this recipe.

Nutritional Information

This recipe serves approximately 4 people, each serving contains around 320 calories, 15g of fat, 35g of carbohydrates, and 8g of protein.

Frequently Asked Questions

1. Can I use sweet onions instead of Roscoff onions?

Yes, any sweet onion variety such as Vidalia onions can be used as an alternative.

2. How can I make the soup vegan?

To make a vegan version of this soup, use vegan butter and swap the chicken broth for vegetable broth, and skip the cheese or use a plant-based cheese alternative.

3. How do I store leftovers?

Allow the soup to cool before transferring it to an airtight container. It can be stored in the refrigerator for up to 3 days.

4. Can I freeze French onion soup?

Yes, you can freeze the soup without the bread and cheese. Once cooled, transfer it to a freezer-safe container. To serve, thaw in the refrigerator overnight and reheat on the stove.

5. What dishes pair well with French onion soup?

This soup is perfect as a starter or can be served alongside a fresh salad or a sandwich for a complete meal.