Herb-Roasted Pork Tenderloin with Sweet Potato Mash

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

Juicy pork tenderloin roasted with fresh herbs served alongside creamy mashed sweet potatoes for a comforting Whole30 dinner. This American-inspired Whole30 recipe, ready in about 50 minutes, pairs pork tenderloin, sweet potatoes, olive oil for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 450 calories and feeds 4, so it slots cleanly into a Whole30 week and pairs well with roasted sweet potato or a simple olive-oil salad. 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: 35 min Serves 4 American cuisine 450 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 425°F. In a small bowl, mix 2 tbsp olive oil, 4 minced garlic cloves, 1 tbsp chopped rosemary, 1 tbsp chopped thyme, 1 tsp sea salt, and 1/2 tsp black pepper. Rub this herb mixture evenly over 1.5 lbs pork tenderloin.
  2. Step 2: Place the seasoned pork on a roasting rack in a baking dish and roast for 25-30 minutes until internal temperature reaches 145°F. Let rest 10 minutes before slicing.
  3. Step 3: While pork roasts, place 2 large peeled and cubed sweet potatoes into a large pot and cover with water. Bring to a boil over high heat and cook for 15 minutes until tender.
  4. Step 4: Drain sweet potatoes and mash with 1/4 cup unsweetened coconut milk, 1 tbsp olive oil, and 1 tsp sea salt until smooth and creamy.
  5. Step 5: Serve sliced pork tenderloin alongside a generous scoop of sweet potato mash.

Frequently asked questions

How long does Herb-Roasted Pork Tenderloin with Sweet Potato Mash take to make?

Total time is about 50 minutes (15 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 Herb-Roasted Pork Tenderloin with Sweet Potato 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 Herb-Roasted Pork Tenderloin with Sweet Potato 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 Herb-Roasted Pork Tenderloin with Sweet Potato Mash 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 Herb-Roasted Pork Tenderloin with Sweet Potato Mash whole30?

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

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