One-Pot Creamy Mushroom and Herb Quinoa Soup

Name: One-Pot Creamy Mushroom and Herb Quinoa Soup
Prep time: 15 min
Cook time: 28 min
Total time: 43 min
Yield: 4 servings
Cuisine: European
Ingredients: 2 tablespoons (30 ml) extra-virgin olive oil; 1 pound (450 g) mixed fresh mushrooms (cremini, shiitake, and button), cleaned with damp paper towel, sliced ¼ inch thick; 1 medium (150 g) yellow onion, finely diced; 3 cloves (15 g) garlic, minced; ¾ cup (150 g) quinoa, rinsed thoroughly; 4 cups (960 ml) vegetable broth (or light chicken broth); ¾ cup (180 ml) heavy cream; 4 sprigs (6 g) fresh thyme sprigs; ¼ cup (15 g) fresh flat-leaf parsley, chopped; to taste sea salt; to taste freshly ground black pepper; ½ lemon (1 piece) fresh lemon, halved (optional); 1 teaspoon (5 ml) aged balsamic vinegar (optional)

From the MyKitchenBank Kitchen

A cozy, restaurant-quality soup that combines earthy mushrooms, nutty quinoa, and fresh herbs in a silky cream broth. Made entirely in one pot, this vegetarian dish is ready in under 45 minutes and requires minimal cleanup. The mushrooms are deeply sautéed to build umami, and the quinoa adds protein and texture. Perfect for weeknight dinners or lunch.

Prep: 15 min
Cook: 28 min
Wait: 5 min
Total: 48 min
Makes: About 6 cups (1.4 L), serves 4 as a main course

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Steps

Before you start

Rinse the quinoa thoroughly under cold water to remove any bitter coating
Slice all mushrooms to roughly the same thickness (about ¼ inch or 6 mm) so they cook evenly
Have the vegetable broth measured and ready before you begin
Chop the fresh herbs while the mushrooms cook to save time

1
Sauté mushrooms until golden
- Heat olive oil in a large pot (5 quart or 4.7 L) over medium-high heat.
- Once shimmering, add the sliced mushrooms in a single layer.
- Do not stir for 4–5 minutes, letting them develop a golden crust.
- Stir and cook for another 3–4 minutes until all the mushrooms are tender and golden brown.
- This caramelization builds deep umami flavor.
- The mushrooms will release liquid during cooking.
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Ready when: Mushrooms are golden brown on both sides and tender
Tip: Don't stir immediately—let them sit so they develop color and caramelize properly.
2
Build the aromatic base
- Reduce heat to medium.
- Add the diced onion to the mushrooms and stir well, scraping any browned bits from the bottom of the pot.
- Cook for 3–4 minutes, stirring occasionally, until the onion is softened and translucent.
- Add the minced garlic and cook for 1 minute more, stirring constantly, until fragrant.
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Ready when: Onion is soft and translucent, garlic smells aromatic
Tip: Keep the heat at medium so the garlic softens without browning or burning.
3
Add quinoa and toast briefly
- Stir in the rinsed quinoa and toast it with the vegetables for 1–2 minutes, stirring frequently.
- This toasting step adds a slight nutty flavor to the quinoa.
- The grains will begin to look opaque at the edges.
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Ready when: Quinoa grains look slightly opaque at edges
Tip: Don't skip toasting—it deepens the quinoa's flavor and prevents a starchy texture.
4
Deglaze and add broth
- Pour in the vegetable broth, stirring to incorporate all the quinoa.
- Add the fresh thyme sprigs.
- Bring the mixture to a gentle boil, then reduce heat to medium-low and simmer uncovered for 15 minutes, stirring occasionally.
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Ready when: Quinoa is tender and translucent spirals are visible, liquid has reduced by about one-fourth
Tip: Keep the heat at medium-low—a rolling boil can cause the soup to taste thin and bitter.
5
Finish with cream and herbs
- Remove and discard the thyme sprigs.
- Stir in the heavy cream, then reduce heat to low.
- Let it warm through for 1–2 minutes, stirring gently, without boiling.
- Season generously with sea salt and freshly ground black pepper to taste.
- Stir in the chopped fresh parsley.
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Ready when: Cream is warmed through and parsley is distributed; soup is smooth and creamy
Tip: Don't let it boil after adding cream or it may split. Keep heat low and stir gently.
6
Finish with brightness and depth
- Taste the soup.
- If using the optional lemon, squeeze half a lemon into the pot for brightness, or drizzle in 1 teaspoon of aged balsamic vinegar for subtle depth.
- Stir well and adjust seasoning as needed.
- Let the soup rest off heat for 5 minutes to allow flavors to meld.
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Ready when: Soup is fragrant and flavors are balanced
Tip: Lemon lifts earthy flavors; balsamic adds umami depth. Choose one or taste both before deciding.

Good to know

Tips

For a lighter version, replace half the heavy cream with whole milk or unsweetened oat milk. The soup will be less rich but still creamy and smooth.
Toast your mushrooms undisturbed for the first 4–5 minutes—this Maillard reaction develops incredible depth of flavor that can't be rushed.
If the soup seems too thick after sitting, stir in vegetable broth by the quarter-cup until you reach your preferred consistency. Quinoa continues to absorb liquid as it cools.
Serve with crusty bread, a dollop of crème fraîche, or a sprinkle of crispy fried sage for elegance.

Make ahead

The soup can be made 1 day ahead. Prepare through step 4 (after the quinoa is cooked), then cool completely. Refrigerate in an airtight container. To serve, reheat gently over medium-low heat, then add the cream and fresh parsley as in step 5. The texture is best when the cream is added just before serving.

Storage & reheating

Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently on the stovetop over medium heat, stirring occasionally and adding a splash of broth or cream if it has thickened. Do not freeze, as the cream and quinoa texture will suffer after thawing.

Substitutions

mixed fresh mushrooms (cremini, shiitake, and button) → Use all cremini or all shiitake mushrooms for a deeper, more consistent flavor. If using only one variety, trim stems and slice uniformly for even cooking.
quinoa → Farro, pearl barley, or wild rice (increase cooking time to 20–25 minutes). These grains absorb more liquid; adjust broth as needed to maintain a soupy consistency.
heavy cream → Crème fraîche, sour cream, or Greek yogurt (stir in off heat to prevent curdling). These add tang; add them in the final 30 seconds of cooking and don't boil.
fresh thyme sprigs → Dried thyme (use 1½ teaspoons instead of 4 fresh sprigs) or fresh rosemary sprigs. Dried herbs are more concentrated; reduce the amount. Rosemary pairs beautifully with mushrooms.