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A bowl of vegetarian French onion soup topped with cheesy toast.

Vegetarian French Onion Soup

A delicious vegetarian alternative to the classic soup, with the same hearty, rich flavor.
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Prep Time 15 minutes
Cook Time 1 hour 15 minutes
Total Time 1 hour 30 minutes
Servings: 4 people
Course: Appetizer, Main Course, Soup
Ingredients Method

Ingredients
  

Caramelized Onions
  • 3-4 sweet white onions sliced
  • 3 tablespoon butter
  • 2 tablespoon brown sugar
Soup
  • 16 oz baby bella mushrooms
  • 1 tablespoon olive oil
  • 2 tablespoon minced garlic
  • 2 tablespoon soy sauce
  • 2 tablespoon Worcestershire sauce
  • 2 teaspoon paprika
  • 3 tablespoon flour
  • 6 cups vegetable broth
  • 1 teaspoon dried thyme
  • ½ teaspoon black pepper
  • salt to taste

Method
 

Caramelized Onions
  1. Melt 3 tablespoons butter over medium-high heat in a large saute pan.
  2. Add onions and cover for 30 minutes. Mix occasionally.
  3. Once onions are limp and starting to brown, mix in brown sugar. Cover and cook until onions are caramelized to your liking, mixing occasionally.
Soup
  1. After adding brown sugar to onions, heat olive oil in a large soup pot. Add sliced mushrooms and cover for 10 minutes. Mix occasionally.
  2. Once mushrooms are reduced (shrunk in half with a simmering brown liquid on the bottom of the pot), add garlic, soy sauce, Worcestershire sauce, and paprika. Mix thoroughly, cover, and let simmer for 2-3 minutes.
  3. While mixing, sprinkle in flour. Mix until no flour or clumps are visible.
  4. Add vegetable broth, thyme, and black pepper. Cover and simmer for 15-20 minutes.
  5. Add caramelized onions to the soup, and mix. Cover and let simmer for another 5-10 minutes.
Toppings
  1. Optional (but recommended!): toast baguette slices topped with Gruyere cheese until melted. Put in soup and enjoy!