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Dutch Oven French Onion Soup

A rich and comforting French Onion Soup slow-cooked in a Dutch oven, featuring caramelized onions, savory broth, and melted cheese-topped bread.

Ingredients

Scale
  • 6 large yellow onions, thinly sliced
  • 4 tablespoons unsalted butter
  • 2 tablespoons olive oil
  • 1 teaspoon salt
  • 1/2 teaspoon sugar
  • 4 cloves garlic, minced
  • 1/2 cup dry white wine
  • 8 cups beef broth
  • 2 sprigs fresh thyme
  • 1 bay leaf
  • Salt and freshly ground black pepper, to taste
  • Baguette slices, toasted
  • 2 cups grated Gruyère cheese

Instructions

  1. Heat butter and olive oil in a Dutch oven over medium heat until melted.
  2. Add sliced onions, salt, and sugar; cook slowly, stirring frequently, until onions are deep golden brown and caramelized, about 45 minutes.
  3. Add minced garlic and cook for 1 minute until fragrant.
  4. Pour in white wine to deglaze the pot, scraping up browned bits from the bottom.
  5. Add beef broth, thyme, and bay leaf; bring to a simmer and cook uncovered for 30 minutes.
  6. Remove thyme sprigs and bay leaf; season soup with salt and pepper to taste.
  7. Ladle soup into oven-safe bowls; place toasted baguette slices on top and sprinkle generously with Gruyère cheese.
  8. Place bowls under the broiler until cheese is melted and bubbly, 3–5 minutes. Serve immediately.

Notes

For a vegetarian version, substitute beef broth with rich mushroom broth. Serve with a crisp green salad for a complete meal.