A delightful aroma wafted through my kitchen as I sautéed garlic and onions one sunny afternoon. It struck me how easily we could transform the humble cauliflower into a vibrant dish that satisfies both cravings and dietary needs. Enter the Low Carb Mushroom & Spinach Cauliflower Rice—a quick keto side dish that whips up in no time and pairs beautifully with grilled chicken or a light salad. With its hearty medley of mushrooms and fresh spinach, this meal not only pleases the palate but keeps your low-carb goals on track. Plus, it’s the perfect foundation for experimenting with different vegetables or proteins! Curious to see how wonderfully this dish comes together? Let’s dive into making your new favorite side!

Why is this dish a must-try?
Quick and Easy: This dish comes together in under 30 minutes, making it a hassle-free option for busy weeknights.
Low Carb Delight: Enjoy all the comfort of traditional rice dishes without the carbs—perfect for keto enthusiasts!
Flavorful Medley: The combination of earthy mushrooms, vibrant spinach, and aromatic garlic creates a mouthwatering, savory flavor profile.
Versatile Base: Use it as a side for grilled chicken or baked fish, or make it a star by adding proteins like shrimp or tofu. For other quick and nutritious sides, check out Chicken Rice Warm or Gyeran Bap Comforting.
Crowd-Pleasing: This recipe is sure to impress both family and friends, giving traditional rice a run for its money!
Mushroom & Spinach Cauliflower Rice Ingredients
For the Cauliflower Rice
• Frozen Riced Cauliflower – This is your primary base and a fantastic low-carb alternative to rice; fresh cauliflower can be used if you prefer.
For the Stir-Fry
• Soy Sauce (or Coconut Aminos) – Adds savory umami flavor; coconut aminos are a great gluten-free substitute.
• Olive Oil – Ideal for sautéing your vegetables; feel free to swap it out for avocado oil if you’re aiming for a higher smoke point.
• Chopped Onion – Provides sweetness and depth; shallots or green onions make for milder replacements.
• Garlic Cloves – Infuses an aromatic flavor; garlic powder is an excellent alternative when fresh isn’t available.
• Sliced Mushrooms – The star of this dish, adding earthiness and texture; you can switch them with broccoli or asparagus if needed.
• Spinach – Adds a nutrient boost and vibrant color; Swiss chard or kale work well as alternatives.
This Mushroom & Spinach Cauliflower Rice can effortlessly elevate any meal, so let’s bring these fresh ingredients together and transform your dinner table!
Step‑by‑Step Instructions for Mushroom & Spinach Cauliflower Rice
Step 1: Cook the Cauliflower Rice
Begin by cooking the frozen riced cauliflower according to package instructions, typically 4–6 minutes in the microwave, until it’s tender and heated through. If using fresh cauliflower, grate it or pulse in a food processor until it resembles rice, then cook in a large skillet over medium heat for about 5 minutes, stirring occasionally until slightly softened.
Step 2: Sauté the Onions
While the cauliflower rice cooks, heat 1–2 tablespoons of olive oil in a large skillet over medium heat. Add the chopped onions and sauté for 3–4 minutes until they become translucent and start to soften. This step adds a lovely sweetness and depth of flavor to your Mushroom & Spinach Cauliflower Rice.
Step 3: Add the Mushrooms
Next, stir in the sliced mushrooms to the skillet with the onions. Sauté for about 5 minutes, allowing the mushrooms to cook down and turn golden brown. They should release their moisture and develop a rich, earthy flavor that perfectly complements the other ingredients.
Step 4: Incorporate the Garlic
Add the minced garlic to the skillet with the sautéed onions and mushrooms. Cook for an additional 1 minute, stirring frequently, until the garlic becomes fragrant and aromatic. This step is key to infusing your Mushroom & Spinach Cauliflower Rice with a delightful garlicky aroma.
Step 5: Mix in the Cauliflower Rice and Soy Sauce
Now, incorporate the cooked cauliflower rice into the skillet. Drizzle in 1–2 tablespoons of soy sauce (or coconut aminos) and stir until the rice absorbs the sauce evenly, about 2–3 minutes. You’ll know it’s ready when the mixture is heated through and well combined, creating a savory base for your dish.
Step 6: Add the Spinach
Finally, fold in the spinach and cook for 1–2 minutes, just until it wilts and retains its vibrant green color. This final addition not only enhances the visual appeal of your Mushroom & Spinach Cauliflower Rice but also boosts the nutritional profile of this tasty low-carb side dish.

Mushroom & Spinach Cauliflower Rice Variations
Feel free to unleash your creativity with these delightful twists that will elevate your Mushroom & Spinach Cauliflower Rice!
-
Mushroom Swap: Replace mushrooms with bell peppers or zucchini for a different flavor profile. These veggies provide a fresh crunch that brightens the dish.
-
Protein Boost: Add grilled chicken, shrimp, or tofu to turn this side into a satisfying main course. This not only enhances the meal’s heartiness but also makes it a complete protein source.
-
Spicy Touch: Sprinkle in red pepper flakes or a dash of hot sauce for a kick of heat. A little spice can take your taste buds on a thrilling adventure!
-
Cheesy Flavor: Mix in nutritional yeast for a cheesy note without dairy. This vegan-friendly option adds a lovely savory depth that pairs beautifully with the other ingredients.
-
Herb Infusion: Fresh herbs like thyme or basil can elevate the flavors. Just a sprinkle can amplify the aroma and freshness of this dish.
-
Coconut Twist: Use coconut milk instead of soy sauce for a tropical flair. This substitution will add a creamy richness that complements the veggies wonderfully.
-
Nutty Crunch: Toss in some toasted almonds or walnuts for a satisfying crunch. This not only enhances texture but also adds a dose of healthy fats.
For more inspiring sides, consider whipping up some Chicken Rice Warm or savor the comforting flavors of Gyeran Bap Comforting. The possibilities are endless!
Make Ahead Options
These Low Carb Mushroom & Spinach Cauliflower Rice are ideal for meal prep aficionados! You can prepare the sautéed onions, mushrooms, and garlic mixture up to 3 days in advance. Just store it in an airtight container in the refrigerator to retain its fresh flavors. When you’re ready to serve, simply reheat that mixture in a skillet, then add the cooked cauliflower rice and spinach, stirring until warmed through—this ensures your dish is just as delicious as the day you made it. By prepping ahead, you’re not only saving valuable time on busy weeknights but also enjoying a wholesome, quick side dish that’s ready when you are!
Expert Tips for Mushroom & Spinach Cauliflower Rice
-
Adjust to Taste: Begin with less soy sauce and increase according to your sodium preference. This helps avoid overpowering the dish.
-
Cook Mushrooms Thoroughly: Make sure to sauté mushrooms until they’re nicely browned for improved flavor and texture, enhancing your Mushroom & Spinach Cauliflower Rice.
-
Don’t Rush the Garlic: Incorporate garlic only after onions and mushrooms are cooked to prevent burning, which can create a bitter taste.
-
Use Fresh Ingredients: Whenever possible, opt for fresh vegetables over frozen ones to enhance flavor and nutritional value in your dish.
-
Keep it Moist: If your cauliflower rice seems dry, add a splash of water or more soy sauce while cooking, allowing flavors to meld beautifully.
-
Experiment with Variations: Don’t hesitate to swap in your favorite veggies or proteins to customize your Mushroom & Spinach Cauliflower Rice to your liking!
What to Serve with Low Carb Mushroom & Spinach Cauliflower Rice
Elevate your meal with delightful accompaniments that bring out the flavors of this nutritious side dish.
-
Grilled Chicken: A perfect pairing, this lean protein complements the savory notes of the cauliflower rice and adds satisfying texture.
-
Baked Fish: Light and flaky, fish like salmon or lemon sole harmonizes beautifully, offering a fresh contrast to the umami-rich cauliflower rice.
-
Zesty Salad: A crisp arugula or spinach salad with a citrus vinaigrette adds brightness and balances the hearty flavors of the dish.
-
Roasted Veggies: Colorful medleys of roasted bell peppers, zucchini, and carrots add a delightful crunch and vibrant flavor that encourages a full dining experience.
-
Avocado Slices: Creamy, ripe avocado served on the side adds a rich layer of healthy fats, enhancing the overall satisfaction of your meal.
-
Herb-Infused Quinoa: For a nutty twist, serve with light quinoa seasoned with fresh herbs, creating a well-rounded plate that’s visually appealing and nutritious.
-
Coconut Cauliflower Soup: To complete your meal, a warm bowl of lightly spiced coconut soup can make a comforting addition that links nicely with the flavors.
-
Chilled White Wine: A crisp white like Sauvignon Blanc pairs well, cooling down the meal while enhancing the earthiness of the mushrooms in your dish.
Storage Tips for Mushroom & Spinach Cauliflower Rice
Fridge: Store leftovers in an airtight container for up to 3 days. This ensures the flavors stay fresh while keeping your Mushroom & Spinach Cauliflower Rice safe to enjoy later.
Freezer: For longer storage, you can freeze the dish in a freezer-safe container for up to 2 months. Just remember to let it cool completely before sealing to prevent ice crystals.
Reheating: When ready to enjoy, thaw overnight in the fridge if frozen. Reheat in the microwave or on the stovetop over low heat, adding a splash of water to maintain moisture.
Room Temperature: Avoid leaving this dish at room temperature for more than 2 hours to ensure food safety and quality.

Mushroom & Spinach Cauliflower Rice Recipe FAQs
What kind of cauliflower is best to use for this recipe?
Absolutely! You can use either frozen riced cauliflower or fresh cauliflower. If you choose fresh, simply grate it or pulse it in a food processor until it resembles rice. Cooking times may vary slightly; you’ll need about 5 minutes in a skillet over medium heat until it’s softened.
How should I store leftovers of Mushroom & Spinach Cauliflower Rice?
To keep leftovers fresh, store your Mushroom & Spinach Cauliflower Rice in an airtight container in the fridge for up to 3 days. Make sure it’s completely cooled before sealing to maintain moisture and flavor.
Can I freeze Mushroom & Spinach Cauliflower Rice?
Yes, you can! For freezing, let the dish cool completely, then transfer it to a freezer-safe container. It can be stored for up to 2 months. When you’re ready to enjoy, simply thaw it overnight in the fridge and reheat in the microwave or on the stovetop with a splash of water.
How can I make sure the mushrooms are cooked properly?
A great tip is to sauté the mushrooms until they’re golden brown, which usually takes about 5 minutes. This browning process allows them to develop a rich, earthy flavor that enhances your Mushroom & Spinach Cauliflower Rice. If you see them releasing moisture but not browning, increase the heat slightly.
Are there any dietary considerations for this recipe?
Very! If you’re cooking for someone with gluten sensitivities, make sure to use coconut aminos instead of soy sauce. Additionally, if you’re watching sodium intake, start with a smaller amount of soy sauce and adjust to taste. And of course, check for any allergies related to the vegetables used in the recipe, such as mushrooms or garlic.

Mushroom & Spinach Cauliflower Rice: Your New Favorite Keto Side
Ingredients
Equipment
Method
- Begin by cooking the frozen riced cauliflower according to package instructions, typically 4–6 minutes in the microwave, until it's tender and heated through.
- While the cauliflower rice cooks, heat 1–2 tablespoons of olive oil in a large skillet over medium heat. Add the chopped onions and sauté for 3–4 minutes until they become translucent.
- Next, stir in the sliced mushrooms to the skillet with the onions. Sauté for about 5 minutes until they turn golden brown.
- Add the minced garlic to the skillet. Cook for an additional 1 minute until the garlic becomes fragrant.
- Incorporate the cooked cauliflower rice into the skillet. Drizzle in 1–2 tablespoons of soy sauce and stir until absorbed, about 2–3 minutes.
- Finally, fold in the spinach and cook for 1–2 minutes until it wilts.

Leave a Reply