This vegan mushroom barley soup is the ultimate cozy-day comfort food. It’s a savory, nourishing mix of hearty mushrooms, tender pearl barley, and fragrant herbs simmered in a rich vegetable broth. Whether you're warming up from a rainy afternoon or using up that lingering stash of barley in your pantry (guilty!), this one-pot mushroom barley recipe is satisfying, wholesome, and easy to make.
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The backstory.
It was one of those gray, drizzly days where the only thing that sounded good was a cozy bowl of something warm and nourishing. With rain tapping on the windows and a serious chill in the air, I reached for my go-to comfort fix: soup. And since I’m still on my mission to make a dent in the never-ending bulk bag of pearl barley sitting in my pantry, this mushroom barley soup was the perfect fit. It’s hearty and rich with earthy mushrooms, tender barley, and savory herbs—exactly what a rainy day calls for. Cozy vibes: fully achieved. Barley stash: still hanging on, but we’re getting there. I estimate one more recipe to go!
xoxo Kori
It's a must-make.
This vegan barley mushroom soup isn’t just another cozy bowl—it’s a flavor-packed, fiber-rich hearty soup that checks all the boxes:
- Features fresh mushrooms and fragrant herbs that create layers of savory, umami-rich flavor
- The pearl barley gives this soup a chewy, satisfying bite that’s comfort food without the heaviness
- Naturally dairy-free and vegan, it’s easy to adapt for gluten-free or high-protein needs
- Perfect for using up pantry staples like barley and veggie broth
- Gets even better after a day in the fridge—hello, make-ahead magic!
Rainy days, cozy vibes, and a barley stash that refuses to quit—let’s make soup.
Let’s talk texture and flavor.
Think of this mushroom barley soup recipe as the plant-based hug you didn’t know you needed. The broth is rich and savory with umami from soy sauce and fresh mushrooms, while the barley brings a satisfying chewiness that holds up beautifully in leftovers. Carrots and celery add a gentle sweetness, while herbs infuse the soup with that classic homemade vibe. It’s cozy, layered, and deeply comforting—without being heavy.
What you'll need.
Here’s a look at what goes into this cozy barley mushroom soup:
- Vegetables: You’ll need a mix of onion, garlic, carrots, celery, and a full pound of sliced cremini mushrooms or baby bella mushrooms.
- Extra Virgin Olive Oil
- Vegetable Stock
- Broth and Grains: A good quality low sodium vegetable broth is key to building flavor here. And of course, you’ll need pearl barley—a hearty, chewy whole grain that makes this soup so satisfying. Hulled barley or brown rice can also be used if you're keeping it gluten free.
- Seasonings: Salt, black pepper, and a splash of soy sauce (or tamari) create the savory base that brings this soup to life.
- Herbs: Dried thyme, rosemary, and a bay leaf add depth and that unmistakable cozy herbaceous note that makes this feel like classic comfort food.
- Garnish: Finish with a sprinkle of fresh parsley or thyme, or top with toasted chopped walnuts or pine nuts for crunch.
Craving more cozy bowls? My Butternut Squash Soup is smooth and comforting, and my Mediterranean Stuffed Peppers put leftover barley to good use.
Customize it your way.
This easy mushroom barley soup is endlessly adaptable. Want to mix it up? Try adding:
- A handful of white beans or lentils for extra plant protein
- Chopped sweet potatoes or bell peppers for a pop of color
- A swirl of coconut cream or cashew cream to make it a creamy mushroom soup
- If you aren't vegan or vegetarian you can certainly use beef broth or chicken broth.
- For a creamy texture without dairy, blend a portion of the soup or stir in creamy oat milk, cashew cream, or full-fat coconut milk before serving.
- Use fish sauce or miso paste instead of soy sauce if preferred
- Hulled barley for an even nuttier bite—just note it requires a longer cooking time, usually 20–25 minutes more than pearl barley.
Flexible dietary swaps.
Want to make it your way? Here are some healthy alternatives for this barley soup recipe:
- Gluten free: Swap pearled barley for hulled barley or brown rice (note: barley is not gluten free!)
- Soy-free: Use coconut aminos in place of soy sauce
- Low sodium: Choose a low sodium vegetable broth and use low-sodium tamari
- Add protein: Toss in meatless sausage crumbles or white beans
How to make this recipe for mushroom barley soup.
This soup recipe comes together in just a few steps:
Cook the veg
Saute the onions, carrots, celery, then garlic in olive oil until soft.
Saute mushrooms
Saute the sliced mushrooms then add in the seasonings.
Simmer
Add seasoning, vegetable stock, tamari, and barley. Simmer until the barley is tender.
Add greens
Add the greens the last 15 to 20 minutes. Season to taste.
How to serve it.
This simple mushroom barley soup is cozy and versatile:
- Ladled hot into a bowl with crusty bread on the side
- Garnished with fresh parsley or fresh thyme
- Packed in a thermos for a warm lunch on the go
- Paired with a side salad for a light but satisfying dinner
- Make it flex – stir in shredded chicken or chopped cooked beef for a heartier soup.
Kori's tips.
- Use fresh mushrooms for the best earthy flavor
- Prep your veggies ahead of time to make the recipe even quicker
- For deeper umami, add a spoonful of nutritional yeast or miso paste
- Want it creamy? Blend half the soup, or stir in a spoonful of cashew cream or creamy oat milk.
FAQs
Store leftovers in an airtight container in the fridge for up to 4 days.
Yes! Let it cool fully, then freeze in portions for up to 3 months.
Microwave: Reheat in a microwave-safe bowl in 1-minute intervals, stirring in between. Add a splash of broth or water if the soup is too thick.
Stovetop: Reheat gently over medium heat until warmed through. Add a splash of broth or water if needed.
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Vegan Barley Mushroom Soup
Ingredients
For the soup:
- 1 tablespoon extra virgin olive oil
- 1 medium yellow onion chopped
- 2 cloves garlic minced
- 2 ribs celery diced
- 2 medium carrots diced
- 1 pound cremini or baby bella mushrooms sliced
- ½ teaspoon dried thyme
- ½ teaspoon dried rosemary
- 1 bay leaf
- 8 cups low-sodium vegetable broth
- ¾ cup pearl barley uncooked
- 3 teaspoons + extra to taste tamari or soy sauce (can also use miso paste or fish sauce)
- 2 cups thinly sliced beet greens, kale, spinach, or Swiss chard
- Salt & black pepper to taste
Instructions
- In a large soup pot or Dutch oven, heat the extra virgin olive oil over medium heat. Add onions, celery, and carrots. Sauté for 5–6 minutes until softened. Add garlic and sauté for 1 minute.
- Stir in mushrooms and cook until their moisture evaporates and they begin to brown—about 8 minutes. Add thyme, rosemary, bay leaf, salt, and pepper. Stir well.
- Pour in the broth, tamari, and barley. Bring to a boil, then reduce heat to low and simmer covered for 35–40 minutes, or until barley is tender.
- Stir in the greens during the last 15 to 20 minutes of cooking. Remove bay leaf then season to taste.
Kori's Tips
Nutrition
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