Easy French Onion Soup
A classic French soup with caramelized onions, melted cheese, and crispy baguette slices.
Ingredients
- 3 tablespoons butter
- 0.5 tablespoons olive oil
- 2 pounds yellow onions thinly sliced
- 0.5 teaspoons granulated white sugar
- 0.25 teaspoons salt
- 0.125 teaspoons pepper
- 2 tablespoons all purpose flour
- 6 cups beef broth
- 1 whole bay leaf
- 8 slices baguette
- 4 ounces grated Gruyère cheese
- 1 ounce freshly grated Parmesan cheese
- fresh thyme for garnish, optional
Instructions
- Melt the butter in a large pot or Dutch oven over medium heat. Add the olive oil, onions and sugar. Cook, stirring occasionally, until onions are soft, lightly browned and caramelized, about 30 minutes.
- Add the salt, pepper and flour and cook, stirring, for 1 minute. Stir in the beef broth and add the bay leaf to the pot. Increase heat to bring to a boil. Reduce heat to medium-low and simmer for 30 minutes.
- Taste the soup and season with more salt and pepper as needed.
- Place baguette slices on a baking sheet and toast under the broiler for 2 to 3 minutes, until lightly browned.
- Spoon soup into 4 oven-safe bowls. Place 2 baguette slices on top of each bowl of soup. Sprinkle on grated Gruyère and Parmesan.
- Place bowls on a rimmed baking sheet and transfer to the oven. Heat under the broiler for 2 to 3 minutes, until cheese is melted and lightly browned. Serve.
Notes
Let the onions caramelize slowly for a deeper, richer flavor.