Roasted Cauliflower Steaks with Garlic Herb Butter

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

Thick-cut cauliflower steaks roasted until golden, topped with a rich garlic herb butter sauce for a hearty vegetarian keto main. This american-inspired vegetarian (low-carb) ready in about 40 minutes pairs large head cauliflower, olive oil, garlic for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 220 calories and feeds 2, 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: 15 min Cook: 25 min Serves 2 American cuisine 220 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 425°F. Cut 1 large head cauliflower into 1-inch thick steaks (about 2 cups total), discarding the core. Place steaks on a parchment-lined baking sheet, drizzle with 2 tbsp olive oil, and season with 1/2 tsp salt and 1/4 tsp black pepper. Toss to coat evenly.
  2. Step 2: Roast for 20-25 minutes, flipping halfway through, until the cauliflower is golden brown and tender when pierced with a fork.
  3. Step 3: Melt 1 tbsp unsalted butter in a small saucepan over medium heat. Add 2 minced garlic cloves and cook for 1 minute until fragrant, then stir in 1 tbsp chopped fresh parsley and 1 tsp chopped fresh thyme.
  4. Step 4: Remove cauliflower from oven and drizzle with the garlic herb butter sauce. Serve immediately.

Frequently asked questions

How long does Roasted Cauliflower Steaks with Garlic Herb Butter take to make?

Total time is about 40 minutes (15 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 Roasted Cauliflower Steaks with Garlic 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 large head cauliflower from drying out.

Can I substitute ingredients in Roasted Cauliflower Steaks with Garlic 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 Roasted Cauliflower Steaks with Garlic Herb Butter for a different number of people?

The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). 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 Roasted Cauliflower Steaks with Garlic 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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