This French Onion Soup delivers rich, savory flavors with minimal effort. By utilizing the oven for caramelizing onions, it offers a hands-off approach to a classic dish, crowned with melty Gruyère cheese and crusty bread.
Author:Touria Elkoudssi
Prep Time:15 minutes
Cook Time:2 hours 30 minutes
Total Time:2 hours 45 minutes
Yield:6 servings 1x
Category:Soup
Method:Baking, Simmering
Cuisine:French
Diet:Vegetarian
Ingredients
Scale
6 large yellow onions, halved and sliced 1/4-inch thick
4 tablespoons unsalted butter
1 teaspoon kosher salt
1/2 cup dry white wine (optional)
6 cups beef broth
1 bay leaf
2 sprigs fresh thyme
1 baguette, sliced into 1-inch thick pieces
2 cups shredded Gruyère cheese
Instructions
Preheat Oven:Set your oven to 375°F (190°C).
Prepare Onions:Place sliced onions in a Dutch oven with butter and salt. Toss to coat.
Caramelize Onions:Cover and bake for 1 hour. Uncover, stir, and continue baking uncovered for another hour, stirring occasionally, until onions are deeply golden.
Deglaze:Transfer pot to stovetop over medium heat. Add white wine, scraping up any browned bits, and simmer for 5 minutes.
Simmer Soup:Add beef broth, bay leaf, and thyme. Bring to a boil, then reduce heat and simmer for 30 minutes. Remove bay leaf and thyme sprigs.
Prepare Bread:While soup simmers, toast baguette slices until golden.
Assemble and Broil:Ladle soup into oven-safe bowls. Top each with a toasted baguette slice and a generous amount of Gruyère. Place under broiler until cheese is bubbly and golden.
Notes
For a vegetarian version, substitute beef broth with vegetable broth and ensure cheese is vegetarian-friendly.
If you don’t have oven-safe bowls, melt cheese on bread slices separately and add to soup before serving.