This Vegan French Onion Soup captures the savory, umami-rich flavors of the traditional French classic without any dairy. Caramelized onions create a deep, rich base for the soup, and a flavorful vegetable broth enhances the taste. Topped with a crunchy, vegan-friendly toasted baguette and melty plant-based cheese, this soup is a comforting and satisfying meal that’s perfect for chilly evenings. It’s simple yet full of depth, offering the perfect balance of sweetness from the onions and savory richness from the broth.

Ingredients:

For the Soup:

  • 4 large yellow onions, thinly sliced
  • 3 tbsp olive oil
  • 1 tsp salt (to help caramelize the onions)
  • 2 cloves garlic, minced
  • 1 tsp dried thyme (or 2 sprigs fresh thyme)
  • 1 bay leaf
  • 4 cups vegetable broth (low-sodium)
  • 1 cup dry white wine (or use additional vegetable broth for a non-alcoholic version)
  • 1 tbsp balsamic vinegar (for extra depth)
  • 1 tbsp tamari or soy sauce (for added umami)
  • 1 tsp fresh ground black pepper
  • 1/2 tsp sugar (optional, to balance the flavors)
  • Fresh parsley (for garnish)

For the Topping:

  • 4-6 slices of vegan baguette (or crusty bread of choice)
  • 1 ½ cups vegan shredded cheese (such as vegan mozzarella or Gruyère-style cheese)

Instructions:

  1. Caramelize the Onions:
    • In a large pot, heat the olive oil over medium-low heat. Add the sliced onions and salt, and cook them slowly, stirring occasionally, for about 25-30 minutes, until they are soft, golden brown, and caramelized. This slow cooking is key to developing the rich, sweet flavor.
    • If the onions begin to stick to the pot or brown too quickly, add a splash of water or broth to deglaze the pan and continue cooking.
  2. Add Garlic and Seasonings:
    • Once the onions are caramelized, add the minced garlic, thyme, and bay leaf to the pot. Stir and cook for 2-3 more minutes, until fragrant.
    • Add the white wine (or extra vegetable broth) and cook for another 5 minutes, allowing the alcohol to evaporate and the flavors to meld.
    • Add the vegetable broth, balsamic vinegar, tamari or soy sauce, black pepper, and sugar (if using). Stir to combine, and bring the soup to a simmer.
    • Let the soup simmer for 15-20 minutes to allow the flavors to develop. Taste and adjust seasonings if needed.
  3. Prepare the Topping:
    • While the soup is simmering, preheat the broiler (or your oven to 400°F / 200°C).
    • Toast the slices of baguette or crusty bread until they are lightly golden and crispy, either in the oven or on a pan. Set aside.
  4. Assemble the Soup:
    • Once the soup is ready, remove the bay leaf. Ladle the soup into oven-safe bowls, leaving enough space at the top for the bread and cheese.
    • Place the toasted bread slices on top of the soup, and generously sprinkle the vegan shredded cheese over the bread.
  5. Broil the Soup:
    • Place the bowls under the broiler for about 2-4 minutes, or until the cheese is melted, bubbly, and golden brown. Keep an eye on it to prevent burning.
    • If you don’t have broiler-safe bowls, you can melt the cheese on the bread separately in the oven, then place it on top of the soup just before serving.
  6. Serve:
    • Garnish the soup with fresh parsley for a burst of color and freshness.
    • Serve hot and enjoy your vegan French onion soup with the crispy, cheesy bread topping!

Nutrition (per serving, assuming 4 servings):

  • Calories: ~250-300 kcal
  • Protein: ~3-4 g
  • Fat: ~12-15 g
  • Carbohydrates: ~35-40 g
  • Fiber: ~5-6 g
  • Sugars: ~10-12 g (natural sugars from the onions)
  • Sodium: ~700-800 mg (depending on the broth and soy sauce)
  • Vitamin A: ~6-8% of the Daily Value (from the broth and thyme)
  • Calcium: ~10% of the Daily Value (from vegan cheese)

Notes:

  • Wine Substitute: If you prefer to keep this dish alcohol-free, simply use additional vegetable broth in place of the white wine.
  • Caramelizing the Onions: Be patient while caramelizing the onions; the slow process is key to developing that rich, sweet flavor. Stir occasionally to avoid burning.
  • Bread Options: Use your favorite vegan bread for the topping. If you’re gluten-free, opt for a gluten-free baguette or crusty bread.
  • Vegan Cheese: The cheese is optional but adds that signature creamy, melty texture. Feel free to use your preferred vegan cheese, or leave it off for a lighter version.
  • Storage: Leftover soup can be stored in the refrigerator for up to 4 days. Reheat on the stove, and toast fresh bread when ready to serve.

This Vegan French Onion Soup is a cozy, satisfying dish that captures all the flavor of the classic recipe while being entirely plant-based. Perfect for a hearty lunch, dinner, or as part of a larger spread!