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Mushroom Barley Soup

This mushroom and barley soup is a wonderfully comforting vegetarian dish, perfect for chilly afternoons or a light evening meal. By combining fresh sliced mushrooms with dried porcini or Polish mushrooms, the broth develops a deep, savoury umami flavour that perfectly complements the chewy texture of the pearl barley. The addition of aromatic garlic, celery and carrots ensures every spoonful is packed with wholesome ingredients and a rich, earthy aroma.

Ideal for batch cooking, this hearty soup is an excellent choice for those seeking a nutritious, homemade meal that keeps well for lunch the following day. Serving this dish with a crusty piece of sourdough or a buttered roll makes for a satisfying, fibre-rich dinner. Whether you use button, chestnut or shiitake mushrooms, this versatile recipe is sure to become a seasonal favourite in any kitchen.

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Ingredients for Mushroom Barley Soup

  • 15g dried Polish mushrooms or dried porcini mushrooms*

  • 6 tablespoons unsalted butter

  • 1 medium onion, diced

  • 3 cloves garlic, minced

  • 350g fresh mushrooms, trimmed and thinly sliced

  • 2 stalks celery with leaves, diced

  • 1 large carrot, peeled and diced

  • 1/4 cup chopped fresh parsley

  • 1 tablespoon plain flour

  • 0.9L low-sodium beef broth

  • 180ml barley, rinsed

  • 2 teaspoons kosher salt

  • Freshly ground black pepper

  • *Using a blend of fresh mushrooms is also nice. Try shiitake, cremini, or button.

Put the dried mushrooms in a bowl and cover them with 475ml boiling water. Allow them to soak for 1 hour. Strain the mushrooms through a cheesecloth-lined sieve into a bowl. Reserve the liquid. Coarsely chop the mushrooms and set aside.

Melt the butter in a large, heavy stockpot or Dutch oven over mediumhigh heat. Add the onions and sauté until softened and translucent, about 8 minutes. Add the garlic and sauté until fragrant, about 2 minutes more. Add the fresh mushrooms, celery, carrot, and half of the parsley, and sauté until the mushrooms are golden and the celery and carrots are beginning to soften, about 10 minutes. Stir in the fl our until well blended. Stir in the mushroom soaking liquid, soaked mushrooms, beef broth, and 950ml water. Stir in the barley, salt, and pepper to taste.

Bring the mixture to a boil, stirring frequently. Reduce the heat to low and simmer until the barley is tender, about 30 to 40 minutes. If the soup is too thick, add a little more water. Adjust the seasoning with more salt and pepper if necessary. Sprinkle with the remaining parsley before serving.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 28 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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