Soups & Stews
This Brio mushroom soup recipe delivers restaurant-quality depth with earthy umami and a crispy celery crown that transforms simple ingredients into something extraordinary. The secret lies in slow-cooked mushrooms and a velvety cashew base that creates luxurious texture without dairy.
I developed this after years of perfecting French-style velouté techniques, but with modern adaptability for home cooks.
The foundation begins with aromatic mushrooms sautéed until deeply caramelized, releasing their natural umami richness. We build a creamy base using cashews for depth and body, then finish with fresh herbs and a touch of lemon for brightness.
What sets this apart is the crispy celery crown—thinly sliced celery baked until golden and crunchy, providing both texture contrast and visual appeal.
By the time you serve this soup, you'll have a velvety, aromatic broth loaded with tender mushrooms and topped with those irresistible crispy celery pieces. The combination of earthy flavors, creamy texture, and satisfying crunch makes this more than just soup—it's a complete meal experience that feels indulgent yet balanced.
Perfect for chilly evenings or special gatherings, this recipe scales beautifully while maintaining its restaurant-quality character. The technique is approachable yet professional, ensuring impressive results without complicated steps. Let's create this velvety masterpiece together.
Ingredients for brio mushroom soup
Earthy mushrooms, velvety cashews, and crispy celery crowns transform simple ingredients into restaurant-quality umami richness.
| Ingredient | Amount | Notes |
|---|---|---|
| Cremini Mushrooms 🍄 | 16 oz | Sliced into even halves for even cooking |
| Shiitake Mushrooms 🍄 | 8 oz | Stems removed, caps sliced for depth |
| Yellow Onion 🧅 | 1 whole | Diced finely for aromatic base |
| Garlic Cloves 🧄 | 4 cloves | Minced for potent flavor infusion |
| Celery Stalks 🥬 | 3 whole | Thinly sliced for crown and base |
| Raw Cashews 🥜 | 1 cup | Soaked for velvety texture |
| Vegetable Broth 💧 | 4 cups | Low-sodium preferred for balance |
| Extra-Virgin Olive Oil 🫒 | ½ cup | High-quality for richness |
| Fresh Thyme 🌿 | ¼ cup | Leaves only, finely chopped |
| Fresh Parsley 🌿 | ¼ cup | Chopped for bright finish |
| Lemon Juice 🍋 | 1 tbsp | Freshly squeezed for acidity |
| Salt 🧂 | 1 ½ tsp | Diamond Crystal preferred |
| Black Pepper 🌶️ | ½ tsp | Freshly cracked for warmth |
| All-Purpose Flour 🌾 | 1 tbsp | For crispy celery coating |
The mushrooms are the soul of this soup—cremini and shiitake bring deep umami when caramelized properly. Local farmers markets often have fresh shiitake in season, but the grocery store's refrigerated section works year-round. Look for firm, dense mushrooms with no sliminess. For the celery crown, crisp stalks are essential—avoid any with brown spots or wilted ends. The raw cashews from Trader Joe's or bulk bins provide the perfect creamy base without dairy, but toast them lightly first for enhanced flavor.
No shiitake? Oyster mushrooms add a similar meaty texture, while white button mushrooms work in a pinch but lack depth. Fresh thyme unavailable? Dried thyme at one-third the amount suffices, though fresh is ideal. For the celery crown, fennel bulbs can substitute—sliced thin and baked alongside. The vegetable broth should be rich; Homemade or high-quality store-bought like Pacific Foods makes all the difference. If you prefer a smoother texture, blend the soup longer—just don't overdo it, or the cashew cream will break.
Store the cooked soup in an airtight container for up to 5 days in the fridge, though the celery crown is best served fresh. For make-ahead convenience, bake the crowns separately and reheat them in a 350°F oven for 5 minutes before serving. The cashew base thickens when chilled, so stir in a splash of broth when reheating. Freeze portions for up to 3 months—just omit the celery crown until ready to serve, as it won't reheat crispy.
Why You'll Love This Recipe
- Minimal Chopping Required: I swear by this—just dice the onions, slice the celery into rough chunks, and chop the mushrooms into even pieces. No fancy knife skills needed; the shiitakes and creminis hold their shape while adding depth without fuss.
- Umami Bomb Combo: That mix of cremini and shiitake mushrooms? It’s like a flavor explosion in every spoonful. The earthy shiitakes pair perfectly with the meaty creminis, and the garlic and onion caramelize into something dangerously addictive.
- Weeknight to Potluck Hero: Make a double batch on Sunday and freeze half—it reheats like a dream. Bring it to a dinner party, and no one will guess it’s just mushrooms and pantry staples. Honestly, it’s my go-to for any occasion.
- Budget-Friendly Luxury: Fresh mushrooms might seem pricier, but they stretch further than you’d think. A single batch feeds four heartily, and the leftovers? Even better the next day. Between us, this is the kind of soup that makes grocery night feel like a win.
Step-by-step instructions for earthy mushroom velouté with crispy celery crowns
This method delivers restaurant-quality depth with a signature crispy celery crown topping.
Sauté Aromatics and Mushrooms for Maximum Umami
Heat the 0.5 cup Extra-Virgin Olive Oil in a large Dutch oven over medium heat until shimmering. Add the 1 whole Yellow Onion and 3 whole Celery Stalks, cooking for 8-10 minutes until the onion becomes translucent and celery softens. You'll smell the sweet, earthy aromatics developing—this is your foundation.
Push the vegetables to the sides and add the 16 oz Cremini Mushrooms and 8 oz Shiitake Mushrooms in a single layer. Cook undisturbed for 5 minutes until the mushrooms release their moisture and begin to brown. Stir occasionally, scraping up any browned bits from the bottom—they're packed with flavor. The mushrooms should be tender but still hold their shape, with edges just beginning to crisp.
Build the Velouté Base with Cashew Cream
Stir in the 4 cloves Garlic Cloves and cook for 30 seconds until fragrant. Add the 1 cup Raw Cashews (drained from soaking water) and cook for 2 minutes to toast slightly. Pour in the 4 cups Vegetable Broth and bring to a gentle simmer over medium-low heat.
Let the soup cook uncovered for 15 minutes to allow the cashews to break down and create a naturally creamy texture. The soup should reduce slightly but remain velvety. Stir in the 1 tbsp All-Purpose Flour and cook for another 2 minutes to thicken the base. Taste and adjust seasoning with the 1.5 tsp Salt and 0.5 tsp Black Pepper—this is where you establish the flavor foundation.
Finish with Herbs and Acid Balance
Remove from heat and stir in the 0.25 cup Fresh Thyme, 0.25 cup Fresh Parsley, and 1 tbsp Lemon Juice. The acidity from the lemon brightens the earthy mushrooms while the herbs add freshness. Let the soup rest for 5 minutes to allow flavors to meld. This resting period is crucial—it lets the cashew cream fully emulsify and the soup develop its signature richness.
For the crispy celery crowns, toss 1 cup thin celery slices (reserved from the original 3 whole Celery Stalks) with 1 tbsp All-Purpose Flour and 0.5 tsp Salt. Heat 2 tbsp Extra-Virgin Olive Oil in a separate skillet over high heat until smoking, then fry the celery for 2-3 minutes until golden brown and crisp. Drain on paper towels to remove excess oil.
Assemble and Serve with Perfect Textures
Ladle the warm mushroom velouté into bowls, reserving 1 cup of the soup to thin if needed. Top each serving with the crispy celery crowns, arranging them artistically on top. The contrast between the silky soup and crispy celery is what makes this dish special—each bite delivers both textures simultaneously.
Garnish with additional Fresh Parsley and serve immediately while the celery crowns maintain their crispness. The soup should be rich but not heavy, with the umami from mushrooms balanced by the bright lemon finish. For best results, serve with crusty bread to soak up every last drop of velouté.
Pro Tips For Making Brio Mushroom Soup
- Sear Shiitake First: I learned this the hard way—shiitake mushrooms turn rubbery if you toss them in with the creminis. Slice them thick (¼-inch), hit them with a hot pan and 1 tablespoon of oil for 3-4 minutes until deeply browned before adding anything else. That caramelized edge makes the whole soup sing.
- Slice Celery Thin: Yes, it takes 2 minutes longer, but trust me: thinly sliced celery (⅛-inch or paper-thin) dissolves into the soup without leaving chewy bits. Use the mandoline if you’re impatient, or just stack celery stalks and slice them like you’re cutting paper. The texture change is noticeable.
- Deglaze Twice: After sautéing onions, garlic, and celery, scrape up every last bit with a wooden spoon—then add a splash of broth and let it bubble for 30 seconds. Repeat with another splash. This pulls out all the flavor stuck to the pot instead of just a thin, sad film. (Your future self will notice the difference.)
- Salt the Mushrooms: Don’t wait until the end. Toss sliced creminis and shiitake with ½ teaspoon salt right after they hit the pan. It draws out moisture, which caramelizes into rich, umami depth as they cook. Skip this, and your soup tastes like it’s missing something—even if you can’t pinpoint what.
Serving suggestions for leftovers
Bread Pairings
Serve this velvety soup with a crusty baguette from your local bakery—I love the Brioche from Trader Joe's for its buttery richness that contrasts beautifully with the earthy mushrooms. The crispy celery crowns will crunch perfectly against the soft bread, creating a satisfying textural experience. 🥖
Garnish Enhancements
Elevate the presentation with toasted pumpkin seeds (about 2 tbsp) or crumbled feta cheese (about 2 tbsp) for a tangy twist. A drizzle of high-quality truffle oil (about ½ tsp) adds a luxurious depth that complements the umami.
Keep it simple with extra fresh parsley for a bright, herbaceous finish.
Wine Pairings
A Chardonnay with subtle oak notes—like La Crema Sonoma Coast Chardonnay—balances the soup's creaminess while enhancing the mushrooms' earthy flavors. For red wine lovers, a Pinot Noir (such as Meiomi Pinot Noir) provides enough acidity to cut through the richness without overpowering the delicate herbs. 🍷
Seasonal Variations
In fall, add roasted butternut squash cubes (about ½ cup) to the soup for natural sweetness. For spring, swap the celery crowns for thinly sliced fennel baked with the same technique.
In winter, a sprinkle of smoked paprika (about ¼ tsp) adds warmth to the velvety broth.
Dietary Adaptations
For a vegan version, ensure all ingredients are plant-based (cashew cream is already vegan). To make it gluten-free, use a gluten-free flour blend (like Bob's Red Mill 1:1) for the celery crowns.
For lower fat, reduce the olive oil to ¼ cup and use low-fat coconut milk** (about ½ cup) instead of cashews for creaminess.
Nutrition facts
Frequently asked questions
Can I make this mushroom soup without cashews for creaminess?
For a dairy-free alternative, blend ½ cup cooked white beans (like cannellini) with the broth for creaminess. Or use ¼ cup coconut milk (full-fat for best texture) stirred in at the end. If you prefer dairy, replace cashews with ½ cup crème fraîche or heavy cream.
How do I prevent the celery crowns from getting soggy?
Fry them to perfect crispness (2-3 minutes in hot oil) and drain on paper towels to remove excess oil. Serve immediately over the soup, not before, to maintain crunch. For extra insurance, bake them at 400°F for 8-10 minutes instead of frying.
What's the best way to store leftovers?
Store the soup (without crowns) in an airtight container for 5 days in the fridge. Reheat gently on the stove, stirring in 1-2 tbsp broth to restore creaminess. For the celery crowns, freeze them separately on a tray before transferring to a bag—they'll stay crispy when reheated at 350°F for 5 minutes.
Can I make this soup in a slow cooker?
Yes! Sauté the mushrooms and aromatics first, then transfer everything to the slow cooker. Cook on Low for 4-5 hours or High for 2-3 hours. The cashews will break down naturally, creating a thicker texture. Add broth as needed to reach your desired consistency.
What makes this different from regular mushroom soup?
This recipe uses two mushroom varieties for layered umami, a cashew-based velouté for rich texture without dairy, and the signature crispy celery crown for texture contrast. The slow caramelization of mushrooms and balanced acidity from lemon create a more complex flavor profile than traditional creamy versions.