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Vegetarian French onion soup in a white bowl topped with melted Gruyère cheese.

Vegetarian French Onion Soup

Smiling woman with glasses and dark hair, professional portrait for Baked Bree website.Diane Goodman
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Prep Time 15 minutes
Cook Time 1 hour 25 minutes
Total Time 1 hour 40 minutes
Course Soup
Cuisine French
Servings 4 servings
Calories 445 kcal

Ingredients
  

  • 3 tablespoons olive oil
  • 3 tablespoons unsalted butter
  • 3 pounds yellow onions thinly sliced
  • 1 1/2 teaspoons granulated sugar
  • 2 cloves garlic minced
  • 1/3 cup dry white wine
  • 8 cups low-sodium vegetable broth
  • 2 teaspoons balsamic vinegar
  • 1 bay leaf
  • 1 1/2 teaspoons dried thyme
  • Kosher salt and black pepper to taste
  • 4 slices of baguette
  • 1 cup grated Gruyère cheese

Instructions
 

  • In a large pot, heat oil and butter over medium heat. Add the thinly sliced onions and cook, stirring occasionally, for about 20 minutes.
    Sautéing thinly sliced yellow onions in a large pot for vegetarian French onion soup.
  • Add the sugar and cook another 20 minutes or until the onions are caramelized and golden brown.
    Adding sugar to sliced onions in a pot for Vegetarian French Onion Soup.
  • Stir in the minced garlic and cook for 2 minutes. Deglaze the pot by adding the white wine and scraping the bottom of the pot to loosen any browned bits.
  • Add the vegetable broth, balsamic vinegar, bay leaf, dried thyme, salt, and pepper. Bring to a simmer and cook for 30 minutes.
    Simmering vegetable broth with caramelized onions and herbs in a white enamel pot.
  • Meanwhile, preheat the oven to 400°F. Place the baguette slices on a baking sheet and toast in the oven for about 8-10 minutes, until crispy and golden. Remove from the oven.
    Toasting baguette slices on a baking sheet until crispy and golden for Vegetarian French Onion Soup.
  • Adjust the soup seasoning as needed with more salt or balsamic vinegar. Ladle the hot soup into oven-safe bowls. Top each with a slice of toasted baguette and sprinkle generously with grated Gruyère cheese.
  • Place under the broiler for 3-4 minutes, or until the cheese is melted and bubbly.

Nutrition

Calories: 445kcalCarbohydrates: 56gProtein: 9gFat: 20gSaturated Fat: 7gSodium: 215mgFiber: 9g
Keyword Vegetarian French Onion Soup
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