Slow-Cooked Mushroom Barley Stew

Featured in: Slow Comforts

This dish combines tender mushrooms, pearl barley, and a medley of vegetables slowly simmered to develop rich, hearty flavors. Sautéed aromatics like onion, carrot, celery, and garlic create a flavorful base, while thyme and rosemary add an earthy depth. Suitable for vegan diets when vegetable broth is used, it’s a warm, filling option that pairs well with crusty bread or dairy-free yogurt. Optional additions like kale or tamari allow for customization. Cooking gently over low heat ensures a comforting texture and melded taste, making it ideal for chilly days.

Updated on Mon, 10 Nov 2025 10:10:00 GMT
Hearty slow-cooked mushroom and barley stew served in a rustic bowl.  Save
Hearty slow-cooked mushroom and barley stew served in a rustic bowl. | moonthyme.com

A hearty, comforting stew featuring tender mushrooms, nutty barley, and a medley of vegetables simmered slowly for rich flavor& perfect for chilly days.

This stew has been a family favorite during winter months bringing warmth and comfort to our dinners.

Ingredients

  • Vegetables: 2 tablespoons olive oil, 1 large onion diced, 2 carrots peeled and sliced, 2 celery stalks sliced, 3 garlic cloves minced, 500 g (about 1 lb) cremini or button mushrooms sliced, 1 parsnip peeled and diced (optional), 1 small leek cleaned and sliced (optional)
  • Grains: 150 g (3/4 cup) pearl barley rinsed
  • Liquids: 1.2 liters (5 cups) vegetable broth, 400 g (1 can) diced tomatoes with juices
  • Spices & Herbs: 1 teaspoon dried thyme, 1 teaspoon dried rosemary, 1 bay leaf, 1/4 teaspoon freshly ground black pepper, salt to taste
  • Finishing: 2 tablespoons chopped fresh parsley, 1 tablespoon lemon juice (optional)

Instructions

Step 1:
Heat olive oil in a large Dutch oven or slow cooker insert over medium heat. Add onion, carrots, celery, and a pinch of salt sauté for 5 minutes until softened.
Step 2:
Add garlic and cook for 1 minute stirring until fragrant.
Step 3:
Stir in mushrooms and cook for 7 to 8 minutes until they release moisture and begin to brown.
Step 4:
Add parsnip and leek (if using) then stir in the rinsed barley.
Step 5:
Pour in vegetable broth and diced tomatoes (with juices). Add thyme, rosemary, bay leaf, black pepper, and salt.
Step 6:
If using a Dutch oven bring to a gentle simmer cover and cook on low heat for 2 hours stirring occasionally. If using a slow cooker cook on low for 6 to 7 hours or high for 3 to 4 hours.
Step 7:
Remove bay leaf. Stir in parsley and lemon juice adjust seasoning to taste and serve hot.
Warm, savory mushroom and barley stew garnished with fresh parsley, perfect for dinner.  Save
Warm, savory mushroom and barley stew garnished with fresh parsley, perfect for dinner. | moonthyme.com

Cooking this together has been a favorite way for my family to bond on cold weekends bringing everyone to the table eagerly.

Required Tools

Large Dutch oven or slow cooker, chefs knife, cutting board, wooden spoon, measuring cups and spoons.

Allergen Information

Contains gluten (barley). If using store-bought broth check for celery and other allergens. Always verify ingredient labels for hidden allergens.

Nutritional Information

Per serving: Calories 220, Total Fat 5 g, Carbohydrates 38 g, Protein 6 g.

Comforting slow-cooked mushroom and barley stew with vegetables, ideal for chilly days. Save
Comforting slow-cooked mushroom and barley stew with vegetables, ideal for chilly days. | moonthyme.com

This slow-cooked mushroom and barley stew will quickly become your go-to comfort meal during chilly days.

Recipe FAQ

Can I use different grains instead of barley?

Yes, substitute pearl barley with brown rice or gluten-free grains for a gluten-free option while maintaining a similar texture.

How do the herbs affect the flavor?

Thyme and rosemary infuse the dish with earthy and fragrant notes that complement the mushrooms and vegetables.

What cooking methods are suggested?

This dish can be prepared in a Dutch oven on low simmer for 2 hours or in a slow cooker for several hours, both yielding tender results.

Can I add greens to this dish?

Yes, adding chopped kale or spinach in the last 10 minutes introduces fresh color and nutrients.

What is a recommended way to serve this dish?

Serving it with crusty bread or a dollop of dairy-free yogurt enhances texture and flavor contrasts.

Slow-Cooked Mushroom Barley Stew

Tender mushrooms and nutty barley simmered with vegetables for a rich, comforting dish perfect for cold days.

Prep Time
20 min
Time to Cook
150 min
Total Duration
170 min
Created by Lydia Brooks


Skill Level Easy

Cuisine European

Portions 6 Serving Size

Diet Info Plant-Based, No Dairy

What You'll Need

Vegetables

01 2 tablespoons olive oil
02 1 large onion, diced
03 2 carrots, peeled and sliced
04 2 celery stalks, sliced
05 3 garlic cloves, minced
06 1 pound cremini or button mushrooms, sliced
07 1 parsnip, peeled and diced (optional)
08 1 small leek, cleaned and sliced (optional)

Grains

01 3/4 cup pearl barley, rinsed

Liquids

01 5 cups vegetable broth
02 1 can (14 oz) diced tomatoes with juices

Spices & Herbs

01 1 teaspoon dried thyme
02 1 teaspoon dried rosemary
03 1 bay leaf
04 1/4 teaspoon freshly ground black pepper
05 Salt, to taste

Finishing

01 2 tablespoons chopped fresh parsley
02 1 tablespoon lemon juice (optional)

How to Make It

Step 01

Sauté Vegetables: Heat olive oil in a large Dutch oven or slow cooker insert over medium heat. Add diced onion, sliced carrots, sliced celery, and a pinch of salt. Sauté for 5 minutes until softened.

Step 02

Add Garlic: Stir in minced garlic and cook for 1 minute until fragrant.

Step 03

Cook Mushrooms: Add sliced mushrooms and cook for 7 to 8 minutes, allowing them to release moisture and begin browning.

Step 04

Combine Additional Vegetables and Barley: Stir in diced parsnip and sliced leek if using, followed by the rinsed pearl barley.

Step 05

Add Liquids and Seasonings: Pour in vegetable broth and diced tomatoes with their juices. Incorporate dried thyme, rosemary, bay leaf, black pepper, and salt.

Step 06

Simmer Stew: If using a Dutch oven, bring to a gentle simmer, cover, and cook on low heat for 2 hours, stirring occasionally. For slow cooker use, cook on low for 6 to 7 hours or high for 3 to 4 hours.

Step 07

Finish and Serve: Remove bay leaf. Stir in chopped parsley and lemon juice if desired. Adjust seasoning to taste and serve hot.

Tools Needed

  • Large Dutch oven or slow cooker
  • Chef's knife
  • Cutting board
  • Wooden spoon
  • Measuring cups and spoons

Allergen Details

Review every ingredient for allergens and ask a medical professional when unsure.
  • Contains gluten from barley. Verify all ingredient labels for hidden allergens, especially celery in broth.

Nutrition Details (each serving)

These details are for reference only, and shouldn't replace healthcare advice.
  • Energy: 220
  • Fats: 5 g
  • Carbohydrates: 38 g
  • Proteins: 6 g