This hearty mushroom barley soup is a comforting and nutritious dish perfect for chilly days. The combination of pearl barley, mushrooms, and vegetables creates a rich and flavorful broth that will warm you up from the inside out. It's an easy-to-make recipe that brings together simple ingredients for a satisfying meal.
If you don't usually have pearl barley in your pantry, you might need to pick some up at the supermarket. This grain adds a chewy texture and nutty flavor to the soup. Additionally, make sure you have vegetable broth on hand, as it forms the base of the soup's savory broth. Mushrooms are another key ingredient, providing an earthy depth to the dish.

Ingredients For Mushroom Barley Soup Recipe
Pearl barley: A chewy grain that adds texture and nutty flavor to the soup.
Olive oil: Used for sautéing the vegetables, adding a rich flavor.
Onion: Provides a sweet and savory base for the soup.
Garlic: Adds a pungent and aromatic flavor.
Mushrooms: Contribute an earthy and umami taste.
Vegetable broth: Forms the base of the soup, adding depth and richness.
Water: Helps to adjust the consistency of the soup.
Carrots: Add sweetness and color to the soup.
Celery: Provides a subtle, savory flavor and crunch.
Dried thyme: Adds a hint of herbal aroma and flavor.
Salt: Enhances the overall flavor of the soup.
Black pepper: Adds a touch of heat and complexity.
Technique Tip for This Recipe
When sautéing the onion and garlic, ensure they are cooked until they are translucent and fragrant, but not browned. This will provide a sweet and mellow base flavor for the soup. Additionally, when adding the mushrooms, allow them to cook until they release their moisture and begin to brown slightly. This step enhances their umami flavor, adding depth to the soup. Finally, when simmering the barley, make sure to stir occasionally to prevent it from sticking to the bottom of the pot and to ensure even cooking.
Suggested Side Dishes
Alternative Ingredients
pearl barley - Substitute with farro: Farro has a similar chewy texture and nutty flavor, making it a great alternative to pearl barley.
olive oil - Substitute with canola oil: Canola oil has a neutral flavor and similar cooking properties, making it a suitable replacement for olive oil.
onion - Substitute with leek: Leeks offer a milder, slightly sweet flavor that can complement the other ingredients in the soup.
garlic - Substitute with shallots: Shallots provide a subtle garlic-like flavor with a hint of sweetness, making them a good alternative.
mushrooms - Substitute with zucchini: Zucchini can mimic the texture of mushrooms and absorb the flavors of the soup well.
vegetable broth - Substitute with chicken broth: Chicken broth can add a rich, savory depth to the soup, though it will no longer be vegetarian.
water - Substitute with additional broth: Using more broth instead of water can enhance the overall flavor of the soup.
carrots - Substitute with parsnips: Parsnips have a similar texture to carrots but offer a slightly sweeter and earthier flavor.
celery - Substitute with fennel: Fennel provides a similar crunch and a mild anise flavor that can add complexity to the soup.
dried thyme - Substitute with dried oregano: Dried oregano offers a robust, earthy flavor that can complement the other ingredients well.
salt - Substitute with soy sauce: Soy sauce can add a salty, umami flavor to the soup, enhancing its depth.
black pepper - Substitute with white pepper: White pepper provides a similar heat but with a slightly different, more subtle flavor profile.
Other Alternative Recipes Similar to This Soup
How to Store / Freeze This Soup
- Allow the mushroom barley soup to cool completely before storing. This helps prevent condensation, which can lead to a watery soup and potential spoilage.
- Transfer the cooled soup into airtight containers. For easy portion control, consider using individual serving-sized containers.
- Label each container with the date of preparation. This ensures you keep track of freshness and consume the soup within a safe timeframe.
- Store the containers in the refrigerator if you plan to consume the soup within 3-4 days. The vegetable broth and pearl barley will maintain their texture and flavor during this period.
- For longer storage, place the containers in the freezer. The soup can be frozen for up to 3 months without significant loss of quality.
- When ready to enjoy, thaw the soup in the refrigerator overnight. This gradual thawing helps preserve the texture of the mushrooms and vegetables.
- Reheat the soup on the stovetop over medium heat, stirring occasionally to ensure even heating. Alternatively, you can use a microwave, heating in short intervals and stirring in between.
- If the soup appears too thick after reheating, add a splash of vegetable broth or water to reach the desired consistency.
- Adjust the seasoning after reheating, as freezing and thawing can sometimes dull the flavors. A pinch of salt and a dash of black pepper can revive the taste.
- Enjoy your reheated mushroom barley soup with a slice of crusty bread or a fresh salad for a complete meal.
How to Reheat Leftovers
Stovetop Method:
- Pour the Mushroom Barley Soup into a pot.
- Heat over medium heat, stirring occasionally to prevent sticking.
- Add a splash of vegetable broth or water if the soup has thickened too much.
- Heat until the soup is steaming hot and the barley is tender.
Microwave Method:
- Transfer a portion of the Mushroom Barley Soup into a microwave-safe bowl.
- Cover the bowl with a microwave-safe lid or a microwave-safe plate to avoid splatters.
- Heat on high for 2-3 minutes, stirring halfway through.
- Check the temperature and heat in additional 30-second intervals if needed until the soup is hot throughout.
Oven Method:
- Preheat your oven to 350°F (175°C).
- Pour the Mushroom Barley Soup into an oven-safe dish.
- Cover the dish with aluminum foil to retain moisture.
- Heat in the oven for about 20-30 minutes, or until the soup is hot and bubbly.
Slow Cooker Method:
- Transfer the Mushroom Barley Soup to your slow cooker.
- Set the slow cooker to low heat.
- Heat for 1-2 hours, stirring occasionally, until the soup is thoroughly heated.
Double Boiler Method:
- Fill the bottom pot of a double boiler with water and bring it to a simmer.
- Place the Mushroom Barley Soup in the top pot.
- Stir occasionally, heating until the soup is hot and the vegetables are tender.
Sous Vide Method:
- Place the Mushroom Barley Soup in a vacuum-sealed bag or a resealable plastic bag using the water displacement method.
- Set your sous vide machine to 165°F (74°C).
- Submerge the bag in the water bath and heat for about 1 hour.
- Carefully remove the bag, pour the soup into a bowl, and serve hot.
Best Tools for This Recipe
Large pot: Used for cooking the soup and ensuring all ingredients are well combined and cooked evenly.
Wooden spoon: Ideal for stirring the ingredients without scratching the pot.
Chef's knife: Essential for chopping the onion, garlic, carrots, and celery.
Cutting board: Provides a safe and clean surface for chopping vegetables.
Measuring cups: Used to measure the pearl barley and liquids accurately.
Measuring spoons: Necessary for measuring the olive oil, dried thyme, salt, and pepper.
Ladle: Useful for serving the soup into bowls.
Garlic press: Handy for mincing the garlic quickly and efficiently.
Mixing bowl: Can be used to hold the chopped vegetables before adding them to the pot.
How to Save Time on Making This Soup
Pre-chop vegetables: Chop the onion, garlic, carrots, and celery in advance and store them in the fridge.
Use pre-sliced mushrooms: Purchase pre-sliced mushrooms to save time on preparation.
Quick-cook barley: Soak the pearl barley overnight to reduce cooking time.
Batch cooking: Double the recipe and freeze half for a quick meal later.
Instant pot: Use an Instant Pot or pressure cooker to cut down on simmering time.

Mushroom Barley Soup Recipe
Ingredients
Main Ingredients
- 1 cup pearl barley
- 2 tablespoon olive oil
- 1 medium onion, chopped
- 2 cloves garlic, minced
- 8 oz mushrooms, sliced
- 4 cups vegetable broth
- 2 cups water
- 2 stalks celery, diced
- 1 teaspoon dried thyme
- 1 teaspoon salt to taste
- ½ teaspoon black pepper to taste
Instructions
- 1. Heat the olive oil in a large pot over medium heat.
- 2. Add the chopped onion and garlic, sauté until softened.
- 3. Add the sliced mushrooms and cook until they release their moisture.
- 4. Stir in the carrots and celery, cook for a few more minutes.
- 5. Add the pearl barley, vegetable broth, water, dried thyme, salt, and pepper.
- 6. Bring to a boil, then reduce heat and simmer for about 45 minutes, or until the barley is tender.
- 7. Adjust seasoning if necessary and serve hot.
Nutritional Value
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