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Low Carb Mushroom & Spinach Cauliflower Rice Recipe

Published: Feb 9, 2026 by Chef Ava · This post may contain affiliate links · Leave a Comment

Jump to Recipe· 4.3 from 11 reviews

If you’re on the hunt for a vibrant and nourishing dish that’s bursting with flavor yet kind to your carb count, this Low Carb Mushroom & Spinach Cauliflower Rice Recipe is about to become your new best friend in the kitchen. Imagine tender mushrooms and fresh spinach mingling effortlessly with fluffy cauliflower rice, all brought to life with a hint of savory soy sauce. It’s a harmonious blend that feels indulgent but is surprisingly light, making it perfect as a wholesome side or even a main for those cozy nights when you want something easy, delicious, and healthy.

Ingredients You'll Need

The image shows a grey bowl filled with small white grains that look like cauliflower rice, placed on a wooden board. To the left side of the bowl, there are several peeled garlic cloves spread out on the board. Behind the bowl, there is a white bowl full of fresh green spinach leaves. On the right side, there are four whole white mushrooms resting on the wooden board. The background surface is a white marbled texture. Photo taken with an iphone --ar 4:5 --v 7

This recipe is delightfully simple, relying on just a handful of wholesome ingredients that each add essential flavor, texture, or color to make this dish sing. From earthy mushrooms to vibrant green spinach, every component plays its part perfectly.

  • 10 oz frozen riced cauliflower: The low-carb star that mimics rice texture without the carbs.
  • 1 tablespoon soy sauce: Adds a punch of umami and depth to every bite.
  • 1 tablespoon olive oil: For sautéeing the vegetables and bringing richness.
  • ½ cup chopped onion: Gives a sweet and sharp base flavor.
  • 2 garlic cloves: Because a little garlic always elevates the dish.
  • 3 cups sliced mushrooms: Earthy and meaty, mushrooms bring hearty texture.
  • 2 cups spinach: Bright, nutritious greens that wilt down beautifully into the mix.
  • Additional soy sauce: To taste, for that final seasoning touch.

How to Make Low Carb Mushroom & Spinach Cauliflower Rice Recipe

Step 1: Prepare the Cauliflower Rice

Start by cooking the frozen riced cauliflower according to the package instructions. Using pre-riced cauliflower keeps things quick, and you want it tender but not mushy. This base sets the tone for the texture and low-carb appeal of the whole dish.

Step 2: Sauté Onions

Heat your olive oil in a skillet over medium heat. Toss in the chopped onions and cook them gently until they turn soft and translucent, releasing their natural sweetness. This step lays down a delicious aromatic foundation.

Step 3: Add & Cook Mushrooms

Next, add the sliced mushrooms to the pan. Sauté them until they have released their moisture and are tender, giving the dish a wonderfully savory and hearty bite that balances perfectly with the softer cauliflower.

Step 4: Incorporate Garlic

Stir in the minced garlic cloves, letting their fragrant aroma infuse the entire skillet. Garlic lends that signature depth which makes this Low Carb Mushroom & Spinach Cauliflower Rice Recipe so addictive and comforting.

Step 5: Combine Cauliflower Rice and Soy Sauce

Add the cooked cauliflower rice back into the skillet. Drizzle with soy sauce and stir well, allowing the rice to soak up all those lovely savory flavors. The soy sauce gives the dish that irresistible, slightly salty umami kick we all crave.

Step 6: Finish with Spinach

Finally, pile in the fresh spinach and stir gently until it wilts down. This last step brightens up the dish visually and adds a fresh, leafy contrast that keeps it light and balanced—making every bite exciting.

How to Serve Low Carb Mushroom & Spinach Cauliflower Rice Recipe

A close-up of a white bowl with floral patterns around the rim, filled with a mixture of cooked mushrooms, small pieces of light brown rice or grains, and bright green spinach leaves evenly mixed throughout. The mushrooms are sliced, showing their smooth, dark brown tops and lighter undersides, giving a soft, slightly shiny texture. The grains look tender and moist, with a slightly uneven surface, while the spinach adds a fresh, leafy texture. The bowl sits on a white marbled surface, with a green-and-white striped cloth partially visible in the top corner. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

To take your dish up a notch, try sprinkling freshly chopped herbs like parsley or chives on top. A little toasted sesame seed sprinkle can add a delightful crunch and a subtle nutty flavor. If you like a touch of heat, some red pepper flakes sprinkled lightly will warm things up.

Side Dishes

This recipe shines as a side beside your favorite grilled proteins like chicken, steak, or salmon. It’s also wonderful paired with tofu or tempeh for a full vegetarian feast. Because it’s light yet flavorful, it complements richer dishes without overpowering them.

Creative Ways to Present

For a fun twist, serve the cauliflower rice in hollowed-out bell peppers, or use it as a filling in lettuce wraps for a fresh, low-carb lunch idea. You can also plate it neatly in a ring mold to give your presentation a restaurant-worthy flair that’s sure to impress guests.

Make Ahead and Storage

Storing Leftovers

Store any leftover Low Carb Mushroom & Spinach Cauliflower Rice Recipe in an airtight container in the refrigerator for up to 3 days. It keeps well and flavors even deepen overnight, making it perfect for meal prep.

Freezing

If you want to freeze leftovers, portion the dish into freezer-safe containers or bags and keep it frozen for up to 1 month. When you’re ready to enjoy it, thaw overnight in the fridge for best results.

Reheating

Reheat gently in a skillet over medium heat, stirring occasionally until warmed through, or use a microwave-safe dish and cover to retain moisture. Adding a splash of water or a light drizzle of olive oil can help restore the moisture lost in refrigeration or freezing.

FAQs

Can I use fresh cauliflower instead of frozen riced cauliflower?

Absolutely! Fresh cauliflower grated into small rice-like pieces works beautifully too. Just be sure to cook it thoroughly until tender to get the right texture for the dish.

Is this recipe vegan and gluten-free?

The dish is naturally gluten-free if you use gluten-free soy sauce or tamari, and it is vegan as long as you stick to plant-based oils and soy sauce. It’s a wonderfully flexible recipe for various dietary needs.

Can I add other vegetables to this recipe?

Yes, feel free to toss in bell peppers, zucchini, or even some shredded carrots to customize the colors and flavors. Just remember to adjust cooking times accordingly so everything cooks evenly.

How can I make this dish more filling?

Adding a protein like grilled chicken, tofu cubes, or cooked shrimp turns this cauliflower rice into a complete meal. Alternatively, mix in some nuts or seeds for extra texture and protein.

What’s the best way to keep the spinach vibrant?

Adding the spinach at the very end and cooking it just until wilted keeps it bright and fresh. Overcooking spinach can make it soggy and dull, so a quick stir-in is perfect.

Final Thoughts

There’s something truly special about the way this Low Carb Mushroom & Spinach Cauliflower Rice Recipe comes together—simple, healthy ingredients transforming into a comforting, flavorful dish that feels as satisfying as a hearty meal yet leaves you feeling light. I wholeheartedly encourage you to give this recipe a try; it’s perfect for weeknights, meal prep, or anytime you want a tasty low-carb option that everyone will love.

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Low Carb Mushroom & Spinach Cauliflower Rice Recipe

Low Carb Mushroom & Spinach Cauliflower Rice Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

4.3 from 11 reviews

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A quick and easy low carb side dish featuring sautéed mushrooms and spinach mixed with flavorful cauliflower rice. Perfect for those looking to enjoy a healthy, vegetable-packed alternative to traditional rice.

  • Total Time: 20 minutes
  • Yield: 4 servings

Ingredients

Vegetables

  • 10 oz frozen riced cauliflower
  • ½ cup chopped onion
  • 2 garlic cloves, minced
  • 3 cups sliced mushrooms
  • 2 cups fresh spinach

Other Ingredients

  • 1 tbsp olive oil
  • 1 tbsp soy sauce (plus extra to taste)

Instructions

  1. Cook Cauliflower Rice: Prepare the frozen riced cauliflower according to the package instructions, typically by microwaving or steaming, until heated through and tender.
  2. Sauté Onions: Heat the olive oil in a large skillet over medium heat. Add the chopped onion and cook, stirring occasionally, until the onions become soft and translucent, about 3-4 minutes.
  3. Add Mushrooms: Add the sliced mushrooms to the skillet with the onions and sauté until they release their moisture and become tender, approximately 5-7 minutes.
  4. Add Garlic: Stir in the minced garlic cloves and cook for another 1-2 minutes until fragrant, taking care not to burn the garlic.
  5. Combine with Cauliflower Rice: Add the cooked cauliflower rice to the skillet with the mushrooms, onions, and garlic. Pour in the soy sauce and stir well to ensure the cauliflower rice is evenly coated and flavored. Cook for 2-3 minutes to allow the flavors to meld.
  6. Add Spinach: Top the mixture with the fresh spinach and stir it in. Cook just until the spinach wilts, about 1-2 minutes, then remove from heat.

Notes

  • Use low-sodium soy sauce for a healthier option and to control salt intake.
  • You can substitute fresh cauliflower rice if preferred; adjust the cooking time accordingly.
  • For a richer flavor, add a splash of sesame oil alongside olive oil.
  • Feel free to add protein such as tofu or chicken to make it a full meal.
  • This dish is best served immediately but can be stored covered in the refrigerator for up to 3 days.
  • Author: Chef
  • Prep Time: 5 minutes
  • Cook Time: 15 minutes
  • Category: Side Dish
  • Method: Stovetop
  • Cuisine: American
  • Diet: Low Carb, Gluten Free, Vegetarian

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I'm Ava, a 27 year old chef from Marseille, France, and I'm so glad you found your way here.

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