Authentic French Onion Soup Recipe: Rich, Savory, and Heartwarming

Indulge in the ultimate comfort food with this Authentic French Onion Soup recipe. Perfect for chilly evenings, this soup combines the sweetness of caramelized onions with the richness of beef and chicken stock, topped with a melty cheese blend. Follow this easy-to-follow guide to create a restaurant-quality dish in your own kitchen.

Ingredients

• 4 tablespoons butter – For sautéing the onions to perfection.
• 4 pounds yellow onions, chopped – The star of the dish, providing deep flavor.
• 1 teaspoon salt – Enhances the natural sweetness of the onions.
• 1 tablespoon flour – Thickens the soup for a velvety texture.
• 32 ounces beef stock – Adds a robust, savory base.
• 14.5 ounces chicken stock – Balances the richness with a lighter touch.
• 1/2 teaspoon thyme – Infuses the soup with aromatic herbal notes.
• 2 tablespoons beef base – Intensifies the meaty flavor.
• 1 cup croutons – Adds a satisfying crunch to every bite.

Cheese Mixture

• 1/4 cup Gruyère cheese, shredded – Melts beautifully for a creamy topping.
• 1 tablespoon Asiago cheese – Adds a sharp, nutty flavor.

Preparation

1. In a large stock pot over medium-high heat, melt the butter. Add the chopped onions and 1 teaspoon of salt. Sauté for 20 minutes, stirring occasionally, until the onions are golden brown and caramelized.
2. Sprinkle 1 tablespoon of flour over the onions and stir to coat. Cook for 1 minute until the flour becomes fragrant, like pie crust.
3. Pour in the beef stock, chicken stock, beef base, and thyme. Reduce the heat to low and simmer for 15-20 minutes, allowing the flavors to meld.
4. Ladle the soup into oven-safe bowls. Top with croutons and the shredded cheese mixture. Broil for 2-3 minutes until the cheese is bubbly and golden.

Serve immediately and enjoy this heartwarming French Onion Soup that’s sure to impress!