Easy Vegan French Onion Soup Recipe | Elizabeth Rider (2024)

Easy Vegan French Onion Soup Recipe | Elizabeth Rider (1)

Vegan French Onion Soup is hearty, elegant, and surprisingly easy to make.

This is my vegan twist on classic French onion soup, the main difference being that I use vegetable stock instead of beef stock.

With just six ingredients and a little (hands-off) patience while the onions caramelize, you’ll wonder why you haven’t been making this for years to use up any onions you have sitting on your counter.

In these colder winter months, there’s no better way to stay warm than with a cozy bowl of hot soup.

Aside from being delicious, this vegan french onion soup recipe has nourishing and healing properties.

Give it a try; you’ll be shocked at how much it tastes like the original. I prefer a few big white or yellow onions in this soup.

However, you can use any combo of onions you have on hand—they all become sweet when cooked down and caramelized.

The hands-on time for this recipe is really limited; most of the time it takes is spent on the stove without your help.

It’s the perfect thing to make on a weekend afternoon while you’re doing other chores around the house.

It makes your kitchen and house smell amazing, trust me!

Vegan French Onion Soup Key Ingredients

To make this delicious healthy soup, you’re going to need just a few simple ingredients.

Onions (Of Course!)

Onions, along with garlic, shallots, scallions, and leeks, come from the Allium family and are loaded with antioxidant power.

Plus, they are delicious. Especially when cooked low and slow in recipes like this.

Onions are particularly high in flavonoids that stimulate the production of glutathione, a powerful antioxidant for your liver that helps eliminate toxins.

Onions also contain high levels of sulfur and quercetin, which help neutralize free radicals in the body and protect cell membranes.

Easy Vegan French Onion Soup Recipe | Elizabeth Rider (2)

Thyme (Preferably Fresh)

Our other star ingredient, thyme, has been used for its medicinal purposes for centuries to treat things like gastrointestinal issues, laryngitis, and lack of appetite.

Thyme can also help relieve respiratory ailments related to the common cold and flu. Thymol, flavonoids, B vitamins, vitamin C, and others give thyme its healing properties.

Fresh thyme has an incredible aroma and flavor that’s hard to capture when it’s dried. Use fresh thyme if you can, but feel free to use dried thyme if you can’t find it fresh.

Thyme is a hearty herb that grows well in pots and planters. So, if you find yourself making vegan french onion soup often, then grab yourself a little thyme plant at your local garden store for around $3 to enjoy thyme all year round.

Vegan French onion soup is easy and extra good for you, so eat up!

If you like this soup, try dozens more healthy soup recipes — soup is one of my specialties.

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Easy Vegan French Onion Soup Recipe | Elizabeth Rider (3)

Easy Vegan French Onion Soup Recipe

5 Stars4 Stars3 Stars2 Stars1 Star5 from 8 reviews

  • Author: Elizabeth Rider
  • Prep Time: 15 mins
  • Cook Time: 1 hour 45 mins
  • Total Time: 2 hours
  • Yield: 8 servings 1x
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Description

This vegan French onion soup recipe has been a top Google search result for almost 10 years now—for good reason! It’s healthy, simple to make, and absolutely delicious. If you love it, please leave a star rating in the comments below to help other readers in our community.

Ingredients

UnitsScale

  • 2 tablespoons extra virgin olive oil
  • 3 large white or yellow onions, sliced into thin half-moons
  • 3 large fresh thyme sprigs (about 1 tbsp), leaves stripped, OR 1/2 teaspoon dried
  • 4 cups (1 quart) vegetable stock/broth (no salt added), OR (if not vegan) beef broth or chicken broth)*
  • 2 cups of filtered water
  • 1 bay leaf
  • 2 tablespoons good-quality aged balsamic vinegar
  • 3 teaspoons sea salt, divided (plus more to taste if needed)
  • 1/2 teaspoon freshly ground black pepper

Optional

  • sprouted whole grain bread
  • vegan cheese melted on top

(Non-Vegan Version):

  • grated Gruyere cheese or Swiss cheese (obviously not vegan!) is traditional to melt on top of French onion soup if you follow a “flexitarian” eating style

Instructions

  1. Heat 1 tablespoon olive oil over medium heat in a large soup pot or Dutch oven.
  2. Add the onions, thyme, 1 teaspoon salt, and drizzle 1 tablespoon olive oil over the onions; lower the heat to medium-low. The onions may be filling the pot completely but will cook down to about ⅓ of their mass.
  3. Cook uncovered, stirring occasionally until the onions caramelize and turn light golden brown, about 50-60 minutes.
  4. Add the balsamic and cook until it’s absorbed and the onions are a deeper brown, about 15 more minutes.
  5. Add the stock, water, bay leaf, remaining salt, and pepper, then bring to a boil.
  6. Turn the heat to low and simmer at least 30 minutes.
  7. Remove the bay leaf before serving.
  8. I usually eat it just like this, but you can also serve it with toasted sprouted grain bread and melted gruyere cheese for a more classic presentation (adding the cheese of course makes it not vegan). Instead of baking the cheese onto the soup, put slices of sprouted grain bread on a baking sheet, rub the tops with a fresh garlic clove, drizzle with a little olive oil, and top with the gruyere cheese. Bake for 10 minutes at 350º until the cheese is melted. Top each cup of soup with a slice of the cheesy bread and serve.
  9. This soup (minus the cheese and bread) freezes well in an airtight glass container.
  10. Tip: You can also substitute 1/4 cup of good quality, bold red wine for the balsamic vinegar. I suggest a burgundy or cabernet sauvignon if you want to use wine instead of balsamic vinegar.

Notes

*Note on choosing stock: This recipe is written to be vegan so I use vegetable broth. I’ve included these substitutions if making it vegan is not important to you:

  • (Non-vegan options) Beef broth is traditional in French onion soup and has a deep earthy flavor. Chicken stock is also a great option here if you prefer it. When choosing beef or chicken stock, I suggest a high-quality (preferably organic) stock that does not contain added preservatives or excess sodium. (I like the brands Pacific, 365 from Whole Foods and Kirkland from Costco.) You can also use my homemade chicken stock (aka bone broth) recipe or store-bought bone broth to make this soup for extra protein and healing properties.
Easy Vegan French Onion Soup Recipe | Elizabeth Rider (4)
Easy Vegan French Onion Soup Recipe | Elizabeth Rider (2024)

FAQs

How do you deepen the flavor of French onion soup? ›

Asian fish sauce, cider vinegar, and sherry add depth and complexity to the broth.

What broth is French onion soup made of? ›

What Is French Onion Soup? French onion soup, or soupe à l'oignon gratinée, is a classic French dish made with caramelized onions and beef stock or broth. The soup is topped with bread and cheese, then gratinéed to rich, gooey perfection.

What is the difference between onion soup and French onion soup? ›

What is the Difference Between Onion Soup and French Onion Soup? French onion soup is always made with beef stock. Other onion soups can be made with chicken, vegetable, or beef stock. Additionally, French onion soup typically contains wine or sherry, which isn't typical or necessary in other onion soups.

What is a good substitute for cheese in French onion soup? ›

Key Ingredients & Substitutions

Cheese: To me, there is no better cheese in a French onion soup than Gruyere! However, shredded Swiss or provolone also works very well. Just be sure to find something that is easily shredded or grated, as that's what will give you that amazing gooey, melty cheese we all love.

Why is my French onion soup so bland? ›

If you don't add enough salt, pepper, or other herbs and spices, the soup may taste bland.

Why do you put baking soda in French onion soup? ›

The caramelized onions for this soup cook more quickly due to a pinch of baking soda but still have that deep, slow-cooked flavor. Topping the soup with hot, cheesy toasts prepared while the soup simmers, eliminates the need to bake the soup in specialty French onion soup bowls.

What is Panera French onion soup made of? ›

Sweet caramelized onions in a savory broth with a sherry wine vinegar gastrique, sea salt, topped with cheese and black pepper and sea salt croutons.

Why does French onion soup taste so good? ›

French onion soup is the ultimate comfort food. Onions get slowly cooked until sweet and caramelized, then simmered in rich broth until they're practically falling apart. To finish it off, toasted bread is added to give it that lovable crisp-gone-soggy texture and a generous amount of Gruyère cheese is melted on top.

How caramelized should onions be for French onion soup? ›

The key to good French onion soup is to cook the onions so long that they threaten to melt into a viscous, dark brown paste, à la Marmite. As has already been extensively reported in Slate, there are no shortcuts when you're caramelizing onions; it always takes at least an hour, usually longer.

Why is French onion soup so expensive? ›

First, French onion soup calls for a ton of onions. While onions aren't expensive, there's a lot of labor involved in halving, peeling, and slicing 10, 12, 50, or one billion onions (I don't know how much soup you make).

Should French onion soup be thick or thin? ›

Made slightly thicker than most watered down soups because every mouthful NEEDS a slightly thickened texture to compliment the caramelized onions.

What ethnicity is French onion soup? ›

The classic French onion soup gets its name from its country of origin: France. After making its debut in the 18th century, it has become a national treasure. During ancient times (and still today), onions were cheap and easy to grow, and hence, readily available.

What can I use instead of thyme in French onion soup? ›

What is a Good Thyme Substitute in French Onion Soup? Thyme adds a lot of flavor to french onion soup, but if you don't have any on hand you can use herbs de provence, bay leaf, or oregano to be sure your soup will not be dull.

How can I increase the flavor of French onion soup? ›

Fresh or dried herbs can also help elevate your French onion soup, with bay leaves, sage, and thyme all being typical additions. You may also want to add a smidgen of salt if the soup is too bland or even some sugar to better simulate the caramelized quality that those canned onions probably lack.

Why do French people eat onion soup? ›

The Onion Soup, a traditional and warming dish

It has even become a trendy dish that tourists are eager to try to experience French gastronomy. However, onion soup is in fact not part of French people's daily meals. It was originally meant to be eaten after a family reunion in the middle of the night to cure hangovers

How to doctor up canned French onion soup? ›

Some fresh rosemary or thyme brings a woody, peppery taste to the soup, complementing the umami flavor of the beef stock. With a splash of balsamic vinegar and green onions or fresh basil as a garnish, the canned soup is transformed from a grocery store original into a gourmet dish.

How do you add depth of flavor to soup? ›

"If your broth is lacking in savory richness, try adding roasted onion, tomato paste, mushrooms, seaweed, soy sauce, or miso. These ingredients add umami flavor and depth to broth," she says. The choice of ingredient depends on the recipe, though.

How do you make soup taste stronger? ›

You can extract a clean, strong broth from a combination of water and several pantry ingredients. It's all about layering powerful flavor-enhancers that you probably already have on hand—bacon, tomato paste, herbs, peppercorns, a Parmesan rind, and, of course, kosher salt.

How do you get the most Flavour out of onions? ›

Soak in Vinegar: It only takes about 15 minutes. Soaking raw onions in acid rinses away the harsh flavors and adds pleasant tartness. Soak in Water: Even water washes away those pesky sulfuric flavors. A quick 15-minute soak does the trick.

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