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Soupe à l'Oignon Gratinée (French Onion Soup)

A timeless French onion soup with caramelized onions, rich beef broth, crispy baguette slices and melted Gruyère cheese
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Prep Time 30 minutes
Cook Time 1 hour
Total Time 1 hour 30 minutes
Servings: 6 portions
Course: Appetizer, Main Course
Cuisine: French
Calories: 410
Ingredients Equipment Method Notes

Ingredients
  

  • 4 medium yellow onions thinly sliced
  • 4 tbsp unsalted butter
  • 6 cups beef broth
  • 1/2 cup dry white wine
  • 1 fresh baguette sliced
  • 2 cups grated Gruyère cheese

Equipment

  • large pot
  • Oven-safe bowls
  • Broiler
  • Knife and cutting board
  • Grater

Method
 

  1. Slice the onions thinly for even caramelization
  2. In a large pot, melt butter over medium heat and add onions. Stir frequently until golden brown (20-25 minutes)
  3. Deglaze the pot with white wine, scraping up any browned bits
  4. Add beef broth and simmer for 15-20 minutes
  5. Toast baguette slices until golden brown
  6. Ladle soup into oven-safe bowls, top with baguette slices and Gruyère cheese, then broil until bubbly (3-5 minutes)

Notes

Take time to properly caramelize onions for best flavor. Use oven-safe bowls for broiling. Watch carefully under broiler to prevent burning.