Smoky Mushroom Cauliflower Steak with Herb Butter

By · Reviewed by AislePrompt Editorial · ·

Thick-cut cauliflower steaks seared to a golden crust, topped with a rich herb butter and earthy mushrooms for a satisfying vegetarian keto main. This mediterranean-inspired one pot (vegetarian, low carb) ready in about 45 minutes pairs large head (about 2 lbs) cauliflower, olive oil, sliced cremini mushrooms for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 215 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: 20 min Cook: 25 min Serves 4 Mediterranean cuisine 215 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 425°F (220°C). Cut cauliflower head into 1-inch-thick steaks, discarding the core. Pat dry with paper towels.
  2. Step 2: Place cauliflower steaks on a parchment-lined baking sheet. Brush both sides with 2 tbsp olive oil and sprinkle with 1/4 tsp sea salt.
  3. Step 3: Roast for 25 minutes, flipping once halfway, until edges are golden and tender when pierced with a fork.
  4. Step 4: While cauliflower roasts, heat remaining 1 tbsp olive oil in a skillet over medium heat. Add mushrooms and cook for 8 minutes until browned and liquid evaporates.
  5. Step 5: Stir in minced garlic and 1 tbsp thyme, cooking for 1 minute until fragrant.
  6. Step 6: Remove mushroom mixture from heat. Add 2 tbsp butter and 1/4 tsp sea salt, stirring until melted and combined.
  7. Step 7: Place roasted cauliflower steaks on a plate and top generously with mushroom mixture and herb butter.

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Frequently asked questions

How long does Smoky Mushroom Cauliflower Steak with Herb Butter take to make?

Total time is about 45 minutes (20 min prep + 25 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 Smoky Mushroom Cauliflower Steak with Herb Butter?

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 olive oil from drying out.

Can I substitute ingredients in Smoky Mushroom Cauliflower Steak with Herb Butter?

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 Smoky Mushroom Cauliflower Steak with Herb Butter 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 Smoky Mushroom Cauliflower Steak with Herb Butter vegetarian?

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

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