Sautéed Cauliflower Rice with Mushrooms and Fresh Thyme

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Light and fluffy cauliflower rice cooked with earthy mushrooms and aromatic fresh thyme for a delicious Whole30 side dish. This american-inspired whole30 (vegetarian) ready in about 25 minutes pairs sliced cremini mushrooms, extra virgin olive oil, minced garlic cloves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 120 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 10 min Cook: 15 min Serves 4 American cuisine 120 cal/serving
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Ingredients

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Instructions

  1. Step 1: Remove leaves and core from 1 medium cauliflower head and pulse in a food processor until it resembles rice grains, about 5 cups.
  2. Step 2: Heat 2 tbsp olive oil in a large skillet over medium heat. Add 1 small finely chopped yellow onion and sauté for 4 minutes until softened.
  3. Step 3: Add 8 oz sliced cremini mushrooms and 3 minced garlic cloves to the skillet, sautéing for 5-6 minutes until mushrooms release moisture and start to brown.
  4. Step 4: Stir in the riced cauliflower, 1 tbsp chopped fresh thyme, 1 tsp sea salt, and 1/2 tsp black pepper. Cook, stirring frequently, for 6-8 minutes until cauliflower is tender but not mushy.
  5. Step 5: Drizzle remaining 1 tbsp olive oil over the cauliflower rice, toss to combine, and serve warm as a side.

Frequently asked questions

How long does Sautéed Cauliflower Rice with Mushrooms and Fresh Thyme take to make?

Total time is about 25 minutes (10 min prep + 15 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Sautéed Cauliflower Rice with Mushrooms and Fresh Thyme?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep sliced cremini mushrooms from drying out.

Can I substitute ingredients in Sautéed Cauliflower Rice with Mushrooms and Fresh Thyme?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Sautéed Cauliflower Rice with Mushrooms and Fresh Thyme for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Sautéed Cauliflower Rice with Mushrooms and Fresh Thyme whole30?

Yes — this recipe is tagged whole30, vegetarian, gluten free, dairy free based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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