If you’re on the hunt for a vibrant, delicious, and healthy meal that feels comforting without the carb overload, you’re going to love this Low Carb Mushroom & Spinach Cauliflower Rice Recipe. It’s a perfect harmony of tender mushrooms, fresh spinach, and fluffy riced cauliflower, all brought together with a touch of savory soy sauce and garlic. This dish is quick to whip up, packed with flavor, and incredibly satisfying — a fantastic way to enjoy veggies in a brand-new way that feels anything but ordinary.

Ingredients You’ll Need
The beauty of this Low Carb Mushroom & Spinach Cauliflower Rice Recipe is in its simplicity. Each ingredient plays an essential role, whether it’s the earthy mushrooms adding depth, the spinach for a burst of color and freshness, or the riced cauliflower acting as a perfect low-carb base. Here’s what you’ll want to gather before you start cooking:
- 10 oz frozen riced cauliflower: This is the low-carb substitute for traditional rice, providing a light, fluffy texture that soaks up all the flavors beautifully.
- 1 tablespoon soy sauce or coconut aminos: Adds a savory, salty note that brings everything together and enhances the natural umami of the mushrooms.
- 2-3 tablespoons olive oil: Perfect for sautéing and adding a silky richness to the dish.
- 1/2 cup chopped onion: Gives a sweet and aromatic base that builds layers of flavor.
- 2 minced garlic cloves: Garlic breathes life into the recipe with its pungent, fragrant punch.
- 3 cups sliced mushrooms: The star ingredient offering earthiness and meaty texture without any heaviness.
- 2 cups spinach: Fresh spinach adds vibrant color and a nutritious boost, wilting down into the rice for a perfect finish.
- Additional soy sauce to taste: For seasoning as you go and tailoring the dish exactly to your preference.
How to Make Low Carb Mushroom & Spinach Cauliflower Rice Recipe
Step 1: Cook the Cauliflower Rice
Start by preparing the frozen riced cauliflower according to the package instructions. This ensures it’s perfectly tender but not watery, setting the stage for all the delicious flavors to blend beautifully. Having a base that’s just right in texture makes a world of difference for this dish.
Step 2: Sauté the Onions
In a skillet over medium heat, warm up the olive oil, then toss in the chopped onions. Cook them gently until they turn soft and translucent, releasing their natural sweetness. This subtle sweetness is a key flavor anchor that balances the earthiness of the mushrooms perfectly later on.
Step 3: Add Mushrooms
Next, it’s time to add the sliced mushrooms to the skillet. Stir them around and let them cook until they’re tender and beautifully browned. This step not only enhances their flavor but also gives the dish that irresistible meaty texture that pairs so well with cauliflower rice.
Step 4: Incorporate Garlic and Cauliflower Rice
Once the mushrooms are tender, sprinkle in the minced garlic and cook until fragrant—just long enough to let the aroma fill your kitchen. Then, add the cooked cauliflower rice along with the soy sauce. Mix everything thoroughly so each grain of cauliflower rice absorbs that savory goodness.
Step 5: Add Spinach
Last but certainly not least, stir in the fresh spinach and cook just until it’s wilted but still vibrant green. This final touch not only adds a pop of color but also infuses the dish with nutrients and a light, fresh element that keeps the meal feeling bright and satisfying.
How to Serve Low Carb Mushroom & Spinach Cauliflower Rice Recipe

Garnishes
Elevate your Low Carb Mushroom & Spinach Cauliflower Rice Recipe with garnishes like a sprinkle of toasted sesame seeds, chopped fresh herbs like parsley or chives, or a light drizzle of extra soy sauce for an added flavor punch. These little finishing touches really make the dish stand out on the plate.
Side Dishes
This recipe shines as a versatile side or a main dish. Pair it with grilled chicken, seared tofu, or baked salmon to create a well-rounded low-carb meal. Roasted veggies or a crisp side salad also complement its flavors perfectly, adding variety and crunch.
Creative Ways to Present
For a fun presentation, serve the cauliflower rice in hollowed-out bell peppers or scooped inside avocado halves for a colorful, Instagram-worthy plate. You can even turn it into a stuffed portobello mushroom cap by piling the mixture on top and baking it briefly to melt the edges.
Make Ahead and Storage
Storing Leftovers
If you have any leftovers of this Low Carb Mushroom & Spinach Cauliflower Rice Recipe, store them in an airtight container in the refrigerator. It should keep well for up to 3 days, making it an ideal quick lunch or dinner option during your busy week.
Freezing
Freezing is possible, but for best texture, it’s recommended to consume the recipe fresh. If you do freeze it, use a freezer-safe container and plan to eat it within 1 to 2 months. Thaw slowly in the fridge before reheating to minimize moisture release.
Reheating
When reheating, warm the dish gently in a skillet over medium heat rather than the microwave to help maintain its texture and flavor. Stir occasionally until heated through, adding a splash of water or soy sauce if it seems dry.
FAQs
Can I use fresh cauliflower instead of frozen riced cauliflower?
Absolutely! Fresh cauliflower can be riced using a food processor, then lightly steamed or sautéed until tender. Just ensure it’s drained well to avoid excess moisture in the dish.
Is this recipe suitable for vegans?
Yes, as long as you use coconut aminos instead of soy sauce if you want to keep it soy-free and vegan friendly. The dish contains only plant-based ingredients and olive oil.
Can I add other vegetables to this recipe?
Definitely! Feel free to toss in diced bell peppers, zucchini, or shredded carrots for extra color and nutrients. Just add them in the sauté step with the onions or mushrooms according to cooking times.
How spicy is this dish? Can I add heat?
This recipe is mild by default, but you can spice it up by adding crushed red pepper flakes, diced fresh chili, or a dash of hot sauce during the cooking process or as a garnish.
Is Low Carb Mushroom & Spinach Cauliflower Rice Recipe gluten-free?
Yes, it is naturally gluten-free. Just be sure to use tamari or coconut aminos instead of soy sauce if you need to avoid gluten.
Final Thoughts
This Low Carb Mushroom & Spinach Cauliflower Rice Recipe is one of those dishes that becomes a staple once you try it. It’s comforting, nourishing, and bursting with flavor, all while being light enough to enjoy any day. Whether you’re new to low-carb cooking or simply looking for a fresh way to enjoy veggies, this recipe is a total winner and worth sharing with your family and friends. Give it a go – your taste buds will thank you!
Print
Low Carb Mushroom & Spinach Cauliflower Rice Recipe
- Prep Time: 5 minutes
- Cook Time: 20 minutes
- Total Time: 25 minutes
- Yield: 4 servings
- Category: Side Dish
- Method: Stovetop
- Cuisine: American
- Diet: Low Carb
Description
This Low Carb Mushroom & Spinach Cauliflower Rice is a quick and healthy vegetable-forward dish perfect for those looking to enjoy a flavorful, low-carb meal. Featuring tender sautéed mushrooms, fresh spinach, and nutritious cauliflower rice, enhanced with the savory depth of soy sauce or coconut aminos, this recipe is both light and satisfying, ready in just 25 minutes.
Ingredients
Vegetables
- 10 oz frozen riced cauliflower
- 1/2 cup chopped onion
- 3 cups sliced mushrooms
- 2 cups fresh spinach
- 2 minced garlic cloves
Oils and Sauces
- 2–3 tablespoons olive oil
- 1 tablespoon soy sauce or coconut aminos
- Additional soy sauce to taste
Instructions
- Cook the Cauliflower Rice: Prepare the frozen riced cauliflower by following the package instructions, usually involving a brief thaw or microwave step to soften it before cooking.
- Sauté the Onions: Heat olive oil in a large skillet over medium heat. Add the chopped onions and cook, stirring occasionally, until they are soft and translucent, about 3-5 minutes.
- Add Mushrooms: Stir in the sliced mushrooms and continue cooking until they are tender and browned, which generally takes about 5-7 minutes.
- Incorporate Garlic and Cauliflower Rice: Add the minced garlic to the skillet and cook for about 1 minute until fragrant. Then mix in the cooked cauliflower rice along with 1 tablespoon of soy sauce or coconut aminos. Stir well to evenly combine all ingredients.
- Add Spinach: Finally, stir in the spinach and cook until wilted, approximately 2-3 minutes. Adjust seasoning by adding additional soy sauce to taste before serving.
Notes
- For a gluten-free option, use coconut aminos instead of soy sauce.
- Ensure the cauliflower rice is drained well if any excess moisture to prevent sogginess.
- Use fresh spinach for better texture; baby spinach works best.
- Adjust the amount of garlic and soy sauce depending on your taste preference.
- This dish pairs well as a side or can be served as a light main course.

