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Cozy Classic French Onion Soup Recipe with Gruyere Cheese Made Easy

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A warm and comforting French onion soup featuring slowly caramelized onions, rich beef broth, toasted baguette, and melted Gruyere cheese, perfect for cozy nights and easy weeknight dinners.

Ingredients

Scale
  • 4 large yellow onions, thinly sliced
  • 3 tablespoons unsalted butter
  • 1 tablespoon olive oil
  • 2 cloves garlic, minced
  • 6 cups (1.4 liters) beef broth, homemade or store-bought, low sodium preferred
  • 1/2 cup (120 ml) dry white wine (optional)
  • 2 bay leaves
  • 2 teaspoons fresh thyme, finely chopped or 1 teaspoon dried thyme
  • Salt and freshly ground black pepper, to taste
  • 6 to 8 slices baguette, toasted
  • 2 cups (about 200 grams) Gruyere cheese, grated

Instructions

  1. Peel and slice 4 large yellow onions thinly and evenly, about 10 minutes.
  2. In a heavy-bottomed pot, melt 3 tablespoons unsalted butter with 1 tablespoon olive oil over medium heat.
  3. Add the sliced onions and stir to coat with butter and oil. Cook gently, stirring every 5 minutes, for about 45 minutes to 1 hour until onions are deep golden brown.
  4. Stir in 2 minced garlic cloves during the last 5 minutes of caramelizing.
  5. Pour in 1/2 cup dry white wine and scrape the bottom of the pot to loosen browned bits. Simmer for 5 minutes until wine reduces slightly.
  6. Add 6 cups beef broth, 2 bay leaves, and 2 teaspoons fresh thyme. Bring to a gentle boil, then reduce heat and simmer uncovered for 20 minutes.
  7. Remove bay leaves and season soup with salt and freshly ground black pepper to taste.
  8. While soup simmers, toast 6 to 8 baguette slices until golden and crisp. Grate 2 cups Gruyere cheese.
  9. Ladle hot soup into oven-safe bowls, place toasted bread slices on top, and sprinkle generously with Gruyere cheese.
  10. Place bowls under a preheated broiler for 3 to 5 minutes until cheese is bubbly and golden brown. Watch closely to avoid burning.
  11. Carefully remove from oven and serve immediately, optionally garnished with fresh thyme.

Notes

Cook onions slowly over medium-low heat to avoid burning and achieve deep caramelization. Toast bread before adding to soup to prevent sogginess. If no broiler is available, melt cheese under a hot oven at 425°F (220°C) watching carefully. For vegetarian version, substitute beef broth with vegetable broth and omit wine or replace with sherry vinegar.

Nutrition

Keywords: French onion soup, Gruyere cheese, caramelized onions, comfort food, easy soup recipe, cozy dinner, classic French soup

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