Baked Italian Herb-Crusted Pork Tenderloin with Garlic Mashed Potatoes

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

Juicy pork tenderloin coated in aromatic Italian herbs and baked to perfection, paired with creamy garlic mashed potatoes. This italian-inspired pork ready in about 50 minutes pairs pork tenderloin, dried rosemary, dried thyme for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 420 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: 15 min Cook: 35 min Serves 4 Italian cuisine 420 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 400°F. In a small bowl, mix 1 tsp dried rosemary, 1 tsp dried thyme, 1 tsp dried oregano, 1 tsp salt, and 1/2 tsp black pepper. Rub the mixture all over 1.5 lbs pork tenderloin.
  2. Step 2: Heat 2 tbsp olive oil in an oven-safe skillet over medium-high heat. Sear the pork tenderloin on all sides for 2-3 minutes per side until golden brown.
  3. Step 3: Transfer the skillet to the preheated oven and roast the pork for 20-25 minutes or until the internal temperature reaches 145°F. Remove and let rest for 10 minutes before slicing.
  4. Step 4: While the pork roasts, place 3 large peeled and quartered russet potatoes in a large pot and cover with water. Bring to a boil and cook for 15-18 minutes until tender.
  5. Step 5: Drain potatoes and return to pot. Add 4 tbsp unsalted butter, 1/2 cup whole milk, and 3 minced garlic cloves. Mash using a potato masher until creamy and smooth. Season with salt to taste.
  6. Step 6: Serve sliced pork tenderloin alongside garlic mashed potatoes.

Equipment for this recipe

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Frequently asked questions

How long does Baked Italian Herb-Crusted Pork Tenderloin with Garlic Mashed Potatoes 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 Baked Italian Herb-Crusted Pork Tenderloin with Garlic Mashed Potatoes?

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 Baked Italian Herb-Crusted Pork Tenderloin with Garlic Mashed Potatoes?

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 Baked Italian Herb-Crusted Pork Tenderloin with Garlic Mashed Potatoes 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.

What goes well with Baked Italian Herb-Crusted Pork Tenderloin with Garlic Mashed Potatoes?

Italian pork like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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