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Dutch Oven French Onion Soup

This classic Dutch Oven French Onion Soup features caramelized onions simmered in a rich beef broth, topped with toasted bread and melted cheese for a comforting and hearty meal.

Ingredients

Scale
  • 4 large yellow onions, thinly sliced
  • 3 tablespoons unsalted butter
  • 1 tablespoon olive oil
  • 1 teaspoon sugar
  • 4 cloves garlic, minced
  • 8 cups beef broth
  • 1/2 cup dry white wine (optional)
  • 2 bay leaves
  • 1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried thyme)
  • Salt and freshly ground black pepper, to taste
  • Baguette slices, toasted
  • 2 cups grated Gruyère cheese

Instructions

  1. In a Dutch oven, melt butter with olive oil over medium heat.
  2. Add sliced onions and sugar; cook, stirring frequently, until onions are deeply caramelized and golden brown, about 40-45 minutes.
  3. Add minced garlic and cook for another 1-2 minutes until fragrant.
  4. Pour in the white wine to deglaze the pot, scraping up any browned bits from the bottom; cook until wine reduces by half.
  5. Add beef broth, bay leaves, and thyme. Bring to a simmer and cook for 30 minutes. Season with salt and pepper to taste.
  6. Preheat the broiler. Ladle soup into oven-safe bowls, top each with toasted baguette slices, then sprinkle generously with grated Gruyère cheese.
  7. Place bowls on a baking sheet and broil until cheese is melted and bubbly, about 3-5 minutes. Serve hot.

Notes

For a vegetarian version, substitute beef broth with mushroom or vegetable broth and omit the wine if desired.