Double Lentil Mushroom Barley Soup

Featured in: Everyday Comfort Meals

This wholesome soup brings together red and brown lentils, savory mushrooms, and nutty barley in a rich, aromatic broth. The addition of collard greens adds vibrant color and extra nutrition, while dried thyme and smoked paprika provide depth and warmth.

Perfect for meal prep, this soup actually improves overnight as flavors meld together. Each serving delivers 12 grams of plant-based protein, making it a filling choice for lunch or dinner. The texture is satisfying—tender grains, creamy lentils, and meaty mushrooms in every spoonful.

Customize this versatile bowl by swapping greens, adding a splash of lemon for brightness, or serving alongside crusty whole-grain bread for a complete meal.

Updated on Wed, 28 Jan 2026 12:27:00 GMT
A close-up of Double Lentil and Mushroom Barley Soup in a rustic bowl, steam rising from the broth with visible lentils, diced carrots, and sliced mushrooms. Pin it
A close-up of Double Lentil and Mushroom Barley Soup in a rustic bowl, steam rising from the broth with visible lentils, diced carrots, and sliced mushrooms. | soupbuffer.com

Last November, when the first real chill settled over our neighborhood, I found myself craving something substantial yet nourishing. Rummaging through my pantry, I discovered forgotten bags of red and brown lentils alongside pearl barley, and the idea for this double lentil soup was born. The rhythmic chopping of vegetables that afternoon became a meditation, transforming simple ingredients into what has become our household's cold-weather salvation.

My neighbor Kate knocked on our door one snowy evening while this soup was simmering, drawn by the aromatic cloud of smoked paprika and thyme escaping through our kitchen window. She ended up staying for dinner, cradling her bowl with both hands and asking for the recipe before shed even finished her first serving. Now whenever mushrooms go on sale, she texts me just two words: lentil soup?

Ingredients

  • Red lentils: These break down quickly, creating a naturally creamy base without any dairy, and I recommend always rinsing them until the water runs clear to remove any debris.
  • Brown lentils: The sturdy texture holds up during cooking, providing a delightful contrast to their red cousins and delivering that satisfying bite we crave in hearty soups.
  • Pearl barley: This unsung grain adds a delightful chewiness that makes the soup substantial enough for dinner, though it does need thorough rinsing to remove excess starch.
  • Cremini mushrooms: Their earthy depth brings a meaty complexity to this vegetarian soup, and I find slicing them slightly thicker than you might think preserves their texture through cooking.
  • Collard greens: These robust greens maintain their integrity in the hot broth, offering a nutritional powerhouse that doesnt disintegrate like more delicate alternatives.
  • Smoked paprika: Just one teaspoon transforms the entire pot with a subtle smoky dimension that makes guests wonder about your secret ingredient.

Instructions

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Build your flavor base:
Heat olive oil in your largest soup pot and add diced onions, letting them turn translucent and slightly golden at the edges. When you add the garlic, carrots and celery, youll hear that magnificent sizzle that promises good things are coming.
Coax out the mushroom magic:
Give your sliced mushrooms plenty of space in the pot, stirring occasionally until they release their moisture and begin to brown. This patient approach unlocks their deepest flavors and prevents that slippery texture some find off putting.
Introduce the stars:
When you stir in both lentil varieties and barley alongside your herbs, take a moment to let the dry ingredients toast slightly before adding liquid. The nutty aroma that rises tells you youre building proper depth of flavor.
Simmer with intention:
Maintain a gentle bubble rather than a rolling boil to allow the ingredients to soften without turning to mush. You should see occasional breakthroughs at the surface, nothing too vigorous.
Finish with greens:
Adding collards toward the end preserves their vibrant color and nutritional value. Watch them transform from stiff and bulky to silky and integrated as they surrender to the hot broth.
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Cook complete meals by frying, sautéing, simmering, and boiling with easy nonstick cleanup every day.
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A ladle scooping up a serving of Double Lentil and Mushroom Barley Soup, showing the thick texture with collard greens and tender barley floating in the vegetable broth. Pin it
A ladle scooping up a serving of Double Lentil and Mushroom Barley Soup, showing the thick texture with collard greens and tender barley floating in the vegetable broth. | soupbuffer.com

On a particularly hectic Tuesday when deadlines loomed and outside stresses mounted, I found myself stirring this soup almost on autopilot. The repetitive motion and enveloping aromas gradually unwound my tension until I realized Id been smiling without noticing. My partner walked in, took one look at the pot and me, and said simply, That soup is your therapy, isnt it? He wasnt wrong.

Grain Swapping Guide

Through multiple iterations, Ive discovered that quinoa makes an excellent gluten free substitute for barley, cooking in about half the time while still providing that pleasing textural element. Short grain brown rice works too, but requires adjusting the liquid ratio upward by about half a cup and extending the cooking time by roughly 15 minutes to achieve the right tenderness.

Seasonal Adaptations

Summer versions of this soup have emerged in my kitchen featuring tender young rainbow chard in place of collards and fresh thyme instead of dried. During autumn, I often throw in a diced sweet potato alongside the carrots, its natural sweetness balancing beautifully with the earthiness of the mushrooms and lending a gorgeous golden hue to the broth.

Making It Your Own

The beauty of this recipe lies in its adaptability to what you have on hand or what your body is craving. While developing it, I learned that root vegetables can be swapped freely, greens can be exchanged based on season, and even the mushroom variety alters the character in delightful ways.

  • A final squeeze of lemon juice just before serving wakes up all the flavors and provides a brightness that cuts through the richness.
  • Adding a parmesan rind during simmering creates a subtle umami backbone for non vegan versions, just remember to fish it out before serving.
  • For extra protein, stir in a handful of roasted chickpeas as garnish for a delightful textural contrast to the soft soup.
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Double Lentil and Mushroom Barley Soup served hot in a white ceramic bowl, garnished with fresh parsley, with a slice of crusty bread on the side for dipping. Pin it
Double Lentil and Mushroom Barley Soup served hot in a white ceramic bowl, garnished with fresh parsley, with a slice of crusty bread on the side for dipping. | soupbuffer.com

This double lentil and mushroom barley soup has become more than just a recipe in our home its become a signal, a ritual that announces comfort is on its way. When friends spot the familiar pot on the stove, their shoulders visibly relax, knowing theres nowhere they need to be but here, with a bowl of something honest and good.

Recipe FAQs

Can I make this soup gluten-free?

Absolutely. Replace pearl barley with short-grain brown rice, quinoa, or certified gluten-free grains. Ensure your vegetable broth is labeled gluten-free as well.

How should I store leftovers?

Store cooled soup in airtight containers for up to 5 days in the refrigerator. The flavors actually deepen and improve after a day or two. Freeze for up to 3 months if desired.

Can I use other greens instead of collard greens?

Yes, Swiss chard, kale, or spinach work beautifully. Add delicate greens like spinach in the last few minutes of cooking to prevent wilting.

Do I need to soak lentils before cooking?

No, red and brown lentils cook relatively quickly and don't require soaking. Just rinse them thoroughly before adding to the pot.

Can I make this in a slow cooker?

Sauté vegetables first, then transfer everything to your slow cooker. Cook on low for 6–7 hours or on high for 3–4 hours, adding greens in the last 30 minutes.

What can I serve with this soup?

Crusty whole-grain bread, warm tortillas, or a simple side salad make excellent accompaniments. A dollop of vegan yogurt or a drizzle of olive oil adds richness before serving.

Double Lentil Mushroom Barley Soup

Hearty soup with red and brown lentils, mushrooms, barley, and collard greens for a protein-rich, comforting meal.

Prep Time
20 minutes
Time to Cook
45 minutes
Overall Time
65 minutes
Created by Audrey Taylor


Skill Level Easy

Cuisine Type International

Makes 6 Portions

Diet Preferences Plant-Based, No Dairy

What You'll Need

Legumes & Grains

01 ½ cup red lentils, rinsed
02 ½ cup brown lentils, rinsed
03 ¾ cup pearl barley, rinsed

Vegetables

01 2 tablespoons olive oil
02 1 large yellow onion, diced
03 3 garlic cloves, minced
04 2 medium carrots, diced
05 2 celery stalks, diced
06 10 ounces cremini or button mushrooms, sliced
07 4 cups chopped collard greens, approximately 1 small bunch

Liquids

01 8 cups vegetable broth
02 1 cup water

Herbs & Seasonings

01 1 teaspoon dried thyme
02 1 teaspoon smoked paprika
03 2 bay leaves
04 1 teaspoon salt, or to taste
05 ½ teaspoon black pepper, or to taste
06 2 tablespoons chopped fresh parsley, optional for garnish

Steps

Step 01

Sauté aromatics: Heat olive oil in a large soup pot over medium heat. Add diced onion and sauté for 3 minutes until softened.

Step 02

Build flavor base: Stir in minced garlic, diced carrots, and diced celery; cook for 3 to 4 minutes.

Step 03

Develop mushroom depth: Add sliced mushrooms and cook, stirring occasionally, until softened and browned, approximately 5 minutes.

Step 04

Combine legumes and grains: Stir in red lentils, brown lentils, pearl barley, dried thyme, smoked paprika, and bay leaves.

Step 05

Introduce liquids: Pour in vegetable broth and water. Bring to a boil, then reduce heat to a simmer.

Step 06

Primary simmer: Cover and cook for 30 minutes, stirring occasionally.

Step 07

Finish with greens: Add chopped collard greens, salt, and black pepper. Simmer uncovered for 10 to 15 minutes until barley and lentils reach tender consistency.

Step 08

Finalize and serve: Adjust seasoning to taste. Remove bay leaves before serving. Ladle soup into bowls, garnish with fresh parsley if desired, and serve hot.

Tools Needed

  • Large soup pot
  • Chef's knife
  • Cutting board
  • Measuring cups and spoons
  • Ladle

Allergy Info

Review all components for allergens and talk to your health provider if unsure.
  • Contains gluten from barley
  • Recipe is nut-free, soy-free, and dairy-free

Nutrition Details (per portion)

Details are for general guidance. Always seek expert healthcare advice.
  • Energy: 245
  • Fats: 4 g
  • Carbohydrates: 44 g
  • Proteins: 12 g