Wild Mushroom and Thyme Soup
A silky, earthy creamy soup made from a mix of sautéed mushrooms, aromatic vegetables, and a touch of heavy cream. Fresh thyme infuses the broth while the mushrooms cook down and release their deep, savory flavors. The soup is blended until smooth for a luxurious texture that's elegant yet comforting.
- Prep
- 15 min
- Cook
- 30 min
- Wait
- 10 min
- Total
- 55 min
- Makes
- 6 servings (about 6 cups)
Steps
Before you start
- Clean mushrooms with a damp paper towel and trim the stem ends
- Measure and have your vegetable broth ready (4 cups or 960 ml)
- Pick fresh thyme leaves from the stems and set them aside separately
- When blending hot soup, always remove the pot from heat first to avoid burns from steam
Prepare ingredients
- Wipe mushrooms clean with a damp paper towel and trim the stem ends.
- Slice mushrooms ¼-inch thick.
- Dice the onion into ¼-inch pieces.
- Mince the garlic.
- Pick thyme leaves from the sprigs; you should have about 2 teaspoons of leaves.
- Reserve the woody stems in one pile and the picked leaves in a small bowl.
- Measure out the vegetable broth and place it near your stove.
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Ready when: all ingredients measured and ready
Tip: Don't wash mushrooms under running water—use a damp cloth to preserve their delicate, absorbent texture
Sauté the onion
- Place the pot over medium heat and add the butter.
- Once the butter has melted and is foaming, add the diced onion.
- Stir frequently and cook for about 5 minutes until the onion is soft, translucent, and very fragrant.
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Ready when: onion is translucent and soft, with a pleasant, sweet aroma
Cook the garlic
- Add the minced garlic to the pot and stir continuously for about 30 seconds until very fragrant.
- Do not let it brown.
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Ready when: garlic is fragrant and just beginning to turn light golden
Tip: If garlic browns, it will taste bitter—keep the heat at medium and stir constantly
Sauté mushrooms until golden
- Add all the sliced mushrooms to the pot, stirring well to coat them with butter and distribute the onion and garlic evenly.
- Increase the heat to medium-high.
- Let the mushrooms cook undisturbed for about 3–4 minutes to develop a golden crust, then stir and continue cooking for another 10–12 minutes, stirring every couple of minutes.
- The mushrooms will first release liquid (which evaporates), then begin to turn brown.
- They're done when they're golden brown and the liquid in the pot has mostly disappeared.
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Ready when: mushrooms are golden brown and most of the liquid has evaporated from the pot
Tip: Let mushrooms sit undisturbed for the first 3–4 minutes to develop a deeply flavorful golden crust that adds complexity to the soup
Deglaze with wine (if using)
- If using sherry or wine, pour the ¼ cup into the pot, scraping the bottom with a wooden spoon to release any flavorful browned bits stuck to the pan.
- Stir for 1–2 minutes until the liquid has mostly evaporated and the sharp alcohol smell is gone.
- If omitting the wine, skip to the next step.
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Ready when: alcohol smell has dissipated and liquid is mostly evaporated
Build the broth
- Pour in all 4 cups of vegetable broth and add the reserved thyme stems (do not add the picked thyme leaves yet).
- Bring to a gentle simmer over medium-high heat, then reduce the heat to medium-low.
- Simmer uncovered for 8–10 minutes.
- This allows the thyme to infuse the broth and the mushrooms to fully soften.
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Ready when: broth is gently simmering and smells richly of thyme and deep mushroom flavor
Blend until smooth
- Remove the pot from the heat and let it sit for 2–3 minutes so the soup cools slightly and the steam subsides (this prevents burns when blending).
- Use tongs or a slotted spoon to remove and discard the thyme stems.
- Using an immersion blender, blend the soup directly in the pot until completely smooth, working the blender through all areas of the pot.
- If you prefer a regular blender, let the soup cool for 5 minutes, then carefully transfer it in batches (never fill more than halfway), blend until smooth, and return to the pot.
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Ready when: soup is silky smooth with no visible mushroom pieces
Tip: Immersion blending directly in the pot is much safer than transferring hot liquid to a regular blender. If using a traditional blender, secure the lid firmly and cover it with a kitchen towel to contain steam
Add cream and lemon
- Place the pot back over medium-low heat.
- Stir in the heavy cream and fresh lemon juice.
- Heat through for about 2 minutes, stirring occasionally, until the cream is fully incorporated and the soup is creamy and warm throughout.
- Do not let it boil, as high heat can cause the cream to break.
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Ready when: cream is fully blended in, soup is smooth and creamy, and steam rises gently from the surface
Season and serve
- Remove from heat.
- Taste the soup carefully.
- Add kosher salt and freshly ground black pepper to taste—start with ½ teaspoon of salt and ¼ teaspoon of pepper, stir well, taste, and adjust as needed.
- Ladle into bowls and garnish each with a small pinch of the reserved fresh thyme leaves.
- Serve immediately while hot.
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Ready when: seasoning is balanced—soup tastes rich and earthy with bright thyme and subtle lemon notes
Tip: Add salt gradually—you can always add more, but you cannot remove it
Good to know
Tips
- Wipe mushrooms clean with a damp cloth rather than washing them under running water, which causes them to absorb excess moisture and become soggy
- Slice all mushrooms to an even thickness (about ¼ inch) so they cook uniformly and brown evenly
- Let mushrooms sit undisturbed in the pan for the first 3–4 minutes before stirring; this creates a golden, flavorful crust through the Maillard reaction
- An immersion blender is much safer than a regular blender for hot soups—it eliminates the risk of scalding from steam or splashing. If using a regular blender, never fill it more than halfway and always secure the lid tightly before blending
Make ahead
The soup can be made up to 3 days ahead. Cool completely, transfer to an airtight container, and refrigerate. Reheat gently over medium-low heat, stirring occasionally, for about 5–7 minutes until warmed through. If the soup was frozen without cream, thaw it and add fresh heavy cream when reheating for the best texture.
Storage & reheating
Room temperature: up to 2 hours in a covered pot or airtight container. Refrigerator: up to 3 days in an airtight container. Freezer: up to 1 month; for best results, freeze before adding cream, then stir in fresh cream after reheating. To reheat frozen soup, thaw overnight in the refrigerator, then warm over medium-low heat, stirring occasionally.
Substitutions
- Mixed mushrooms (cremini, oyster, shiitake) → Any combination of fresh mushrooms: button, portobello, chanterelle, porcini, or maitake. Avoid dried mushrooms unless soaked in warm water for 20 minutes and thoroughly drained. Button mushrooms alone will work but are less flavorful; aim for a mix for depth.
- Fresh thyme sprigs → 2 teaspoons fresh sage leaves or 1.5 teaspoons dried oregano. Sage gives an earthier flavor; oregano makes the soup more Mediterranean. Fresh herbs are always preferable to dried for the best taste.
- Heavy cream or half-and-half → Sour cream, full-fat Greek yogurt, or coconut cream. Use the same amount (⅔ cup / 160 ml). Sour cream and Greek yogurt add a subtle tanginess; coconut cream keeps the soup vegan and rich. Stir these in gently off the heat to prevent curdling.
- Dry sherry or dry white wine → Dry white wine, brandy, or a splash of good balsamic vinegar; or omit entirely. These add complexity and depth. If omitting, reduce the simmering time by 1–2 minutes as there's less liquid to evaporate. The soup will be slightly less complex but still delicious.
