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Two ramekins of French onion soup, topped with melted cheese and thyme.

French Onion Soup

A classic French Onion Soup with caramelized onions, toasted baguette, and melted cheese.
Prep Time 20 minutes
Cook Time 40 minutes
Total Time 1 hour
Course Main Course
Cuisine French
Servings 4 servings
Calories 350 kcal

Ingredients
  

  • 4 pounds pounds yellow onions peeled and thinly sliced
  • 3 tablespoons tablespoons butter
  • 4 cloves cloves garlic minced
  • 3 tablespoons tablespoons flour
  • 1/2 cup cup dry white wine
  • 6 cups cups beef stock or veggie stock
  • 1 teaspoon teaspoon Worcestershire sauce
  • 1 leaf bay leaf
  • 3 sprigs sprigs fresh thyme or 1 teaspoon dried thyme
  • fine sea salt and freshly-cracked black pepper salt and pepper to taste
  • baguette sliced into 1-inch thick pieces
  • grated or sliced cheese such as Gruyère, Asiago, Swiss, Gouda or Mozzarella

Instructions
 

  • Melt butter over medium-high heat in a large stockpot. Sauté onions for 30 minutes until caramelized, then add garlic for 2 minutes. Stir in flour and cook for 1 minute. Deglaze with wine, scraping up browned bits.
  • Add stock, Worcestershire sauce, bay leaf, and thyme. Simmer for 10 minutes, then season with salt and pepper. Remove bay leaf and thyme sprigs.
  • Preheat oven to 400°F. Toast baguette slices for 6-8 minutes until golden.
  • Broil soup with baguette slices and cheese on top for 2-4 minutes until bubbly.

Notes

For an extra rich flavor, use high-quality beef stock and let the onions caramelize thoroughly.
Keyword onions