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Irresistible Easy French Onion Soup Recipe

4.5 from 66 reviews

This irresistible easy French onion soup recipe features golden caramelized onions simmered in flavorful beef broth with a splash of white wine, topped with toasted bread and bubbling Gruyère cheese. Perfect for a comforting appetizer or light meal, this classic French dish is simple to make yet deeply satisfying.

Ingredients

Scale

Soup Ingredients

  • 4 medium Yellow Onions (can substitute with shallots or red onions)
  • 4 cups Beef Broth (can substitute with vegetable broth for a vegetarian option)
  • 1/2 cup White Wine (replace with extra broth if desired)
  • 2 tablespoons Butter (olive oil is a dairy-free alternative)
  • Fresh Herbs (e.g., thyme, adjust according to taste)
  • Additional Veggies (optional: chopped carrots or celery)

Topping Ingredients

  • 4 slices Bread (gluten-free options are available)
  • 1 cup Gruyère Cheese (can substitute mozzarella or provolone)

Instructions

  1. Caramelize Onions: Melt butter in a large pot over medium-low heat. Add the sliced onions and stir frequently, cooking until they turn golden brown and caramelized, approximately 30-40 minutes. This slow cooking develops the deep sweet flavor characteristic of the soup.
  2. Deglaze with Wine: Pour a splash of white wine into the pot with the caramelized onions. Use a spatula to scrape up the flavorful browned bits from the bottom of the pot, mixing them into the onions for added depth.
  3. Add Broth and Simmer: Pour in the beef broth and add fresh herbs if using. Bring the mixture to a gentle simmer and cook for 15-20 minutes to meld the flavors.
  4. Toast Bread: While the soup simmers, toast the bread slices in a toaster or oven until golden and crispy. This will provide a sturdy base for the cheese topping.
  5. Assemble Bowls and Add Cheese: Ladle the hot soup into oven-safe bowls. Place a slice of toasted bread on top of each serving, then generously sprinkle with Gruyère cheese.
  6. Broil to Melt Cheese: Place the bowls under the oven broiler until the cheese melts, becomes bubbly, and turns golden brown, about 3-5 minutes. Watch carefully to avoid burning.
  7. Serve Immediately: Carefully remove the hot bowls from the oven and serve the soup immediately for the best flavor and texture.

Notes

  • You can substitute the beef broth with vegetable broth to make a vegetarian version.
  • Olive oil can be used instead of butter for a dairy-free alternative.
  • Any sturdy bread works well; gluten-free bread is a great option for gluten-sensitive diets.
  • Fresh thyme or other herbs add nice aroma but can be omitted if unavailable.
  • Season the soup with salt and pepper to taste during cooking.
  • Be patient caramelizing onions for the best flavor; rushing this step will compromise the dish quality.

Keywords: French onion soup, caramelized onion soup, easy French soup, cozy autumn soup, comfort food, classic French recipe