Pan-Seared Pork Tenderloin with Roasted Cauliflower Mash

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

A tender pork tenderloin seared to perfection paired with creamy mashed roasted cauliflower for a Whole30-friendly dinner. This american-inspired whole30 (low carb, gluten free) ready in about 45 minutes pairs pork tenderloin, cauliflower florets, extra virgin olive oil for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 350 calories and feeds 3, 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: 35 min Serves 3 American cuisine 350 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 400°F. Toss 4 cups cauliflower florets with 2 tbsp extra virgin olive oil, 1/2 tsp sea salt, and 1/4 tsp black pepper, then spread evenly on a baking sheet. Roast for 25 minutes until golden and tender.
  2. Step 2: While cauliflower roasts, season 1 lb pork tenderloin with 1/2 tsp sea salt, 1/4 tsp black pepper, and 1 tsp fresh thyme leaves.
  3. Step 3: Heat 1 tbsp olive oil in a large skillet over medium-high heat. Add pork tenderloin and sear for 4-5 minutes per side until browned.
  4. Step 4: Reduce heat to medium, cover skillet, and cook pork for an additional 8-10 minutes until internal temperature reaches 145°F. Remove pork and let rest.
  5. Step 5: Transfer roasted cauliflower to a food processor. Add 3 minced garlic cloves and 1/4 cup water or chicken broth, then blend until smooth and creamy. Adjust seasoning with remaining salt and pepper if needed.
  6. Step 6: Slice pork tenderloin and serve over cauliflower mash.

Equipment for this recipe

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Frequently asked questions

How long does Pan-Seared Pork Tenderloin with Roasted Cauliflower Mash take to make?

Total time is about 45 minutes (10 min prep + 35 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 Pan-Seared Pork Tenderloin with Roasted Cauliflower Mash?

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 pork tenderloin from drying out.

Can I substitute ingredients in Pan-Seared Pork Tenderloin with Roasted Cauliflower Mash?

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 Pan-Seared Pork Tenderloin with Roasted Cauliflower Mash for a different number of people?

The recipe is written for 3 servings. Multiply each ingredient by (your serving target / 3). 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 Pan-Seared Pork Tenderloin with Roasted Cauliflower Mash low carb?

Yes — this recipe is tagged low carb, 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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