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A crock of French onion soup with the top layer of cheese browned.

Homemade French Onion Soup


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Description

There’s nothing quite like a bowl of Homemade French Onion Soup, with caramelized onions, rich beef broth, and gooey, melted Gruyère cheese.


Ingredients

Scale
  • 5 to 6 medium yellow or Spanish onions
  • 4 tablespoons butter
  • 1 teaspoon salt
  • 3 garlic cloves, minced
  • 1 tablespoon fresh thyme, plus more for garnish
  • 2 bay leaves
  • 2 teaspoons beef base
  • 1/4 cup cognac or brandy
  • 6 cups beef stock
  • 1 tablespoon Worcestershire sauce
  • 1/3 baguette, cut into croutons
  • 1 tablespoon olive oil
  • 1 teaspoon garlic powder
  • 4 ounces Gruyère cheese, sliced

Instructions

  1. Peel and cut the ends off the onions. Slice them into half-moon shapes (about 1/4″ thickness).
  2. Melt the butter in a heavy-bottom pan over medium to medium-low heat. Add the onions and sprinkle with salt. Toss to coat in the butter.
  3. Cook the onions until tender and caramelized, stirring often. This will take about 45-55 minutes. Do not rush this step.
  4. Add the minced garlic, bay leaves, and fresh thyme. Cook for another minute before deglazing with the cognac.
  5. Let the alcohol cook off for a few minutes, then stir in the beef base.
  6. Pour in the beef stock and Worcestershire sauce. Bring to almost a boil, then reduce heat and simmer, partially covered, for about 30-40 minutes.
  7. While the soup simmers, cut the baguette into croutons. Toss in a bowl with olive oil and garlic powder.
  8. Toast the croutons in the air fryer at 400°F (200°C) for about 2-3 minutes, or bake in a 400°F (200°C) oven, until golden brown.
  9. Preheat the oven to 400°F (200°C). Ladle the soup into oven-safe crocks.
  10. Top with croutons and layer on the cheese. Place crocks on a parchment-lined baking sheet.
  11. Bake for 5-8 minutes, or until the cheese is melted. Broil for a few minutes to brown the cheese.
  12. Garnish with fresh thyme and serve hot.
  13. ENJOY!

Notes

  • This recipe will produce 4 small bowls or 2 large bowls of soup.
  • Slice the onions to about 1/4″ thickness.
  • Allow the onions to caramelize in the butter at a medium to medium-low heat. Do NOT rush this process.
  • Easily substitute the cognac with brandy, white or red wine, or sherry wine.
  • For an alcohol-free French onion soup, replace the alcohol with additional beef stock.
  • Homemade beef stock is best, but store-bought is fine.
  • Simmer the soup for at least 30 minutes to allow the flavors to develop.
  • Shredded cheese can be used instead of sliced. 
  • Prep Time: 5 minutes
  • Cook Time: 1 hour, 25 minutes
  • Category: Soup, Dinner
  • Method: Easy
  • Cuisine: French