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Easy French Onion Soup

closeup of a french onion soup in a mini pot with a gold spoon inside of it.

5 from 1 reviews

This easy french onion soup is the perfect cozy, healthy soup recipe to warm you up on cold winter days! Caramelized onions in a savory beef broth, topped with croutons and melted cheese - is there anything more delicious?

Ingredients

Scale
  • 1 tbsp olive oil
  • 4 large onions, peeled and sliced thinly (yellow, white, or sweet)
  • 3 cloves garlic, minced
  • 1 tbsp whole wheat flour (or all purpose)
  • 1/2 cup red wine or sherry
  • 6 cups low sodium beef broth
  • 1 tbsp worcestershire sauce
  • 1 tbsp balsamic vinegar
  • 1 bay leaf
  • 4 thyme sprigs
  • Sea salt to taste
  • Freshly cracked black pepper to taste
  • 1 baguette
  • Grated gruyere cheese

Instructions

  1. In a large stockpot or Dutch oven with a lid, heat oil over medium-low heat. Add onions and garlic and continue to cook, stirring frequently, until onions are translucent and caramelized, about 30 minutes.
  2. Sprinkle flour over onions and continue to cook while stirring for about a minute. Pour wine into pot and deglaze the pan by scraping the bits off the bottom with your spoon.
  3. Add the broth, vinegar, worcestershire sauce, bay leaf, thyme sprigs, and salt and pepper. Stir and cover. Reduce heat to low and let soup simmer for at least 20 minutes. Discard bay leaf and thyme before serving.
  4. Once you are ready to serve the soup, preheat the oven to 400° F. Slice the baguette into about 1/2 inch slices and lay them flat on a baking sheet. Toast for 5-10 minutes or until golden and crispy.
  5. Ladle soup into individual oven-proof bowls or ramekins. Top each bowl with a slice of toasted baguette and about 2 tbsp grated cheese (or more if you want!).
  6. Turn oven up to broil. Place soup bowls on a baking sheet and place under the broiler for about 5 minutes, or until cheese is melted and bubbly.
  7. Remove from oven carefully and serve immediately.

Keywords: french onion soup