Lemon-Thyme Roasted Cauliflower with Garlic Butter

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

Oven-roasted cauliflower florets tossed in a fragrant garlic butter sauce with fresh thyme and bright lemon zest, perfect as a flavorful vegetarian side dish. This mediterranean-inspired vegetarian (vegetarian) ready in about 40 minutes pairs unsalted butter, garlic cloves, minced, fresh thyme leaves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 180 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: 30 min Serves 4 Mediterranean cuisine 180 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 425°F. Toss 1 large cauliflower head cut into bite-sized florets with 2 tbsp olive oil, 1 tsp salt, and 1/2 tsp black pepper on a large baking sheet until evenly coated.
  2. Step 2: Roast the cauliflower in the oven for 25-30 minutes, stirring halfway through, until golden brown and tender.
  3. Step 3: While cauliflower roasts, melt 4 tbsp unsalted butter in a small skillet over medium heat. Add 4 minced garlic cloves and 2 tsp fresh thyme leaves, cooking for 1-2 minutes until fragrant and garlic is lightly golden.
  4. Step 4: Remove skillet from heat and stir in 1 tbsp lemon zest and 2 tbsp lemon juice.
  5. Step 5: When cauliflower is done, transfer to a large bowl and pour the garlic butter sauce over it. Toss gently to coat. Garnish with 2 tbsp chopped fresh parsley before serving warm.

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Frequently asked questions

How long does Lemon-Thyme Roasted Cauliflower with Garlic Butter take to make?

Total time is about 40 minutes (10 min prep + 30 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 Lemon-Thyme Roasted Cauliflower with Garlic 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 unsalted butter from drying out.

Can I substitute ingredients in Lemon-Thyme Roasted Cauliflower with Garlic 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 Lemon-Thyme Roasted Cauliflower with Garlic 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 Lemon-Thyme Roasted Cauliflower with Garlic Butter vegetarian?

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

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