Soups & Stews
This brown rice and mushroom soup delivers deep umami flavor and satisfying texture in every spoonful—perfect for cozy nights or meal prep. The earthy mushrooms and nutty rice create a hearty vegetarian dish that’s both comforting and balanced, with no artificial shortcuts.
What makes it special is the slow simmering of aromatic vegetables and mushrooms, which develops rich, complex flavors without overpowering the natural taste of the ingredients.
Cooking it right means starting with proper mushroom preparation—sautéing until golden for maximum depth—and letting the broth reduce to a velvety consistency. The result is a soup that’s substantial enough to stand alone but light enough for any meal.
Serve it with a drizzle of sesame oil or a sprinkle of green onions for freshness, and you’ll have a dish that’s as nourishing as it is delicious.
Ingredients for brown rice and mushroom soup
Earthy mushrooms, nutty brown rice, and aromatic vegetables create the foundation for this deeply flavorful vegetarian soup.
| Ingredient | Amount | Notes |
|---|---|---|
| Brown Rice 🍚 | 1 cup | Uncooked, long-grain preferred |
| Shiitake Mushrooms 🍄 | 8 oz | Fresh, stems removed, sliced |
| Cremini Mushrooms 🍄 | 8 oz | Fresh, sliced into quarters |
| Yellow Onion 🧅 | 1 whole | Medium size, diced |
| Carrots 🥕 | 2 medium | Peeled, diced into small cubes |
| Garlic Cloves 🧄 | 4 cloves | Fresh, minced |
| Vegetable Broth 💧 | 4 cups | Low-sodium preferred |
| Extra-Virgin Olive Oil 🫒 | 2 tbsp | For sautéing mushrooms |
| Fresh Thyme 🌿 | ½ tsp | Leaves only, chopped |
| Fresh Parsley 🌿 | ¼ cup | Chopped, for garnish |
| Sesame Oil 🫒 | 1 tbsp | For finishing drizzle |
| Salt 🧂 | 1 tsp | Diamond Crystal preferred |
| Black Pepper 🌶️ | ½ tsp | Freshly ground |
| Green Onions 🧅 | 2 whole | Thinly sliced, for garnish |
The mushrooms are the heart of this dish—shiitake and cremini bring the umami depth that makes this soup truly special. Look for firm, dense mushrooms with minimal stems at Whole Foods or your local farmers' market for the best quality. If using dried mushrooms, soak them first for maximum flavor. The brown rice should be uncooked, long-grain—it holds its texture better than short-grain varieties. For the broth, low-sodium vegetable broth ensures you control the seasoning, though you can reduce the salt later if needed. Diamond Crystal kosher salt dissolves more easily than table salt, so keep that in mind when seasoning.
No shiitake mushrooms? Oyster mushrooms or white button mushrooms work in a pinch, though they'll have a milder flavor. Short on fresh thyme? Dried thyme at one-third the amount suffices, but fresh is ideal for that bright herbal note. The sesame oil should be toasted sesame for maximum aroma—Trader Joe's carries a great option if you can't find it elsewhere. For extra richness, stir in 1 tablespoon of nutritional yeast at the end for a cheesy depth without dairy. The green onions can be swapped for regular onions if needed, though the mild green onion flavor pairs beautifully with the earthy mushrooms.
This soup tastes even better the next day as flavors meld, so double the batch if you're meal prepping. Store in an airtight container in the fridge for up to 5 days or freeze for 3 months. To reheat, add a splash of water or broth to prevent drying out. The sesame oil and parsley should be added fresh after reheating for maximum brightness. For a lighter version, reduce the rice to ½ cup and add 1 cup of spinach at the end for extra nutrients without heaviness.
Why You'll Love This Recipe
- One-Pot Magic: I swear by this recipe when I’m too tired to wash pots—just toss everything in one pot, let it simmer, and walk away. The brown rice soaks up all the umami from the shiitake and cremini mushrooms while the onions caramelize right there, no extra steps.
- Earthy Umami Bomb: Between us, the combo of shiitake and cremini mushrooms is chef’s kiss—deep, meaty, and slightly sweet without tasting like mushrooms at all. Honestly, I’ve had people ask if I used bouillon, but it’s just the mushrooms doing their thing.
- Lunchbox Hero: This soup reheats like a dream, so I make a big batch on Sundays and pack it for work. The brown rice stays fluffy, the carrots hold their bite, and it’s always the first thing gone from my fridge—even over salads.
- Budget Meal Stretch: Brown rice and mushrooms are my wallet’s best friends—this recipe feeds four for under $10 and still feels fancy. Leftovers? Even better. I’ll eat it cold the next day with a sprinkle of chili flakes, and no one bats an eye.
Step-by-step instructions for brown rice and mushroom soup
This method delivers rich umami flavor with perfectly cooked nutty grains and tender mushrooms.
Sauté the Aromatic Vegetables
Heat the 2 tablespoons extra-virgin olive oil in a large pot over medium-high heat. Add the 1 whole yellow onion and 2 medium carrots (both diced), cooking for 5-6 minutes until the onions become translucent and the carrots begin to soften.
Add the 8 ounces shiitake mushrooms and 8 ounces cremini mushrooms (both sliced) to the pot. Cook for 6-7 minutes until the mushrooms release their moisture and develop a golden-brown color. This step develops deep umami flavors while preventing a bland final product.
Add Garlic and Seasonings
Stir in the 4 cloves minced garlic and cook for 30 seconds until fragrant—don't let it brown or it will turn bitter. Add the 1 teaspoon salt, 0.5 teaspoon black pepper, and 0.5 teaspoon chopped fresh thyme, stirring to combine. The garlic should infuse its aroma without overpowering the earthy mushroom base.
Pour in the 4 cups vegetable broth and bring the mixture to a gentle boil. This step ensures all the seasonings and flavors meld into the liquid before the rice is added. Skim off any foam that rises to the surface for a cleaner final texture.
Cook the Brown Rice
Add the 1 cup uncooked brown rice to the pot and stir gently to distribute evenly. Reduce heat to medium-low and maintain a gentle simmer. Cook uncovered for 40-45 minutes, stirring occasionally, until the rice is tender and the liquid has reduced to a creamy consistency.
Here's the thing—brown rice absorbs liquid differently than white rice. You'll know it's done when the grains are firm yet tender and the soup has thickened to a hearty consistency. If it looks too dry, add ½ cup water and continue cooking for 5-10 minutes more.
Finish and Garnish
Remove the pot from heat and stir in the 1 tablespoon sesame oil. This final step adds a delicate nutty aroma that complements the earthy mushrooms and nutty rice. The oil should be evenly distributed throughout the soup.
Ladle the soup into bowls and garnish each serving with 2 whole green onions (thinly sliced) and 0.25 cup chopped fresh parsley. The parsley adds a bright contrast to the rich umami flavors while the green onions provide a fresh finish. Serve immediately while hot for the best texture and flavor experience.
Pro Tips For Making Brown Rice And Mushroom Soup
- Sear Mushrooms in Batches: Don’t overcrowd the pan—cook shiitake and cremini mushrooms in two separate batches if needed. This guarantees they develop that deep, caramelized crust instead of steaming into mush. (Yes, even if you’re impatient like me, resist the urge to rush.)
- Slice Shiitake Lengthwise: Split shiitake mushrooms down the middle instead of chopping them—it keeps them intact while releasing more flavor into the broth. The stems hold the earthy goodness, so don’t toss them unless you’re okay with a milder soup.
- Toast Brown Rice First: Dry-toast the uncooked brown rice in the pot for 2–3 minutes before adding liquid. It deepens the nutty flavor and prevents the soup from turning gummy later. (I learned this the hard way after serving a bland, gluey mess.)
- Simmer Carrots Halfway: Add diced carrots only after the mushrooms and onions have softened and released their flavors. Cooking them too early turns them mushy and dulls the overall taste—wait until the broth is bubbling gently before tossing them in.
Creative variations of this recipe
Asian-Inspired Miso Twist
Swap the vegetable broth for 4 cups dashi broth (or sub with 4 cups water + 1 tbsp dashi powder) and stir in 1 tablespoon white miso paste after adding the rice.
This Japanese-inspired variation adds deep savory notes—just dissolve the miso in 2 tbsp hot broth first to prevent clumping. Top with toasted sesame seeds and a drizzle of Chinkiang vinegar for brightness. 🌿
Creamy Coconut Curry
Add 1 can (13.5 oz) coconut milk with the broth and stir in 1 tbsp red curry paste after sautéing the mushrooms. Use jasmine rice instead of brown rice for a sweeter base, and finish with fresh cilantro and lime wedges.
This Thai-inspired version transforms your soup into a fragrant, creamy bowl that’s perfect with naan. 🥥
Spicy Kimchi Kick
Fold in ½ cup chopped kimchi (plus 1 tbsp kimchi juice) during the last 5 minutes of cooking. The tangy, spicy fermented cabbage cuts through the earthiness beautifully.
For extra heat, add ½ tsp gochujang when stirring in the sesame oil. Garnish with sesame seeds and extra green onions for crunch. 🌶️
Mediterranean Herb Version
Replace thyme with 1 tsp dried oregano and add 1 bay leaf when cooking the rice. Stir in ½ cup crumbled feta cheese at the end (optional) and finish with a drizzle of lemon juice and extra parsley.
This Greek-inspired twist keeps the hearty texture but adds bright, herby freshness. 🍋
Smoky Chipotle Infusion
Add 1 teaspoon adobo sauce (from canned chipotles) with the garlic and a pinch of smoked paprika for subtle heat. The smoky depth pairs perfectly with the mushrooms. Serve with avocado slices and a sprinkle of cotija cheese for a Mexican-inspired bowl. 🔥
Lighter Vegetable Broth Base
For a lighter version, reduce the rice to ½ cup and add 1 cup chopped spinach or kale during the last 5 minutes of cooking. Boost flavor with 1 tsp nutritional yeast and a squeeze of lemon juice.
This keeps the soup nutritious while making it lighter for warmer weather. 💚
Nutrition facts
Frequently asked questions
Can I use dried mushrooms instead of fresh?
Yes! Soak 2 tablespoons dried shiitake or cremini mushrooms in ½ cup hot water for 20 minutes until softened. Use the rehydrated mushrooms (plus their soaking liquid) to replace the 8 oz fresh mushrooms in the recipe. The flavor will be even more concentrated, so reduce the broth slightly if needed.
Why does my soup turn out too watery?
Brown rice absorbs liquid differently than white rice—if your soup is too thin, it likely needs more cooking time. Simmer uncovered for another 10-15 minutes and stir occasionally. If it's still too watery, remove the pot from heat, stir in 1 tablespoon cornstarch mixed with 2 tbsp cold water, and return to low heat until thickened.
Can I make this soup in an Instant Pot?
Sauté the onions, carrots, and mushrooms as directed, then add garlic, broth, and rice. Seal the lid, set to high pressure for 22 minutes, then quick-release. Finish with sesame oil and garnishes. The Instant Pot version cooks faster but may need ½ cup extra broth since pressure cooking reduces liquid differently.
How do I make this gluten-free?
Check your vegetable broth for gluten—opt for a certified gluten-free brand. All other ingredients are naturally gluten-free. For extra flavor, add 1 tsp tamari or coconut aminos instead of soy sauce. The umami from mushrooms and miso (if using) ensures depth without gluten.
What’s the best way to store leftovers?
Let the soup cool completely, then transfer to an airtight container. It keeps in the fridge for 5 days or freezes for 3 months. Reheat gently on the stove with a splash of water or broth to restore creaminess. Add fresh parsley and sesame oil after reheating for brightness.