Oven-Roasted Herb-Crusted Pork Loin with Garlic Mashed Potatoes

By AislePrompt Editorial · Published 2026-05-11 · Updated 2026-05-11

Juicy oven-roasted pork loin coated in a fragrant herb crust paired with creamy garlic mashed potatoes for a comforting meal. This American-inspired pork recipe, ready in about 75 minutes, pairs pork loin roast, fresh rosemary, fresh thyme for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 550 calories and feeds 6, 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.

Ingredients

• 2 lbs pork loin roast
• 2 tbsp, finely chopped fresh rosemary
• 1 tbsp, finely chopped fresh thyme
• 4, minced garlic cloves
• 3 tbsp olive oil
• 1 1/2 tsp salt
• 1 tsp black pepper
• 2 lbs, peeled and cubed russet potatoes
• 4 tbsp unsalted butter
• 1/2 cup whole milk
• 3, peeled garlic cloves for mashed potatoes
• 1 tsp salt for potatoes

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Instructions

1. Step 1: Preheat oven to 375°F. In a small bowl, combine 3 tbsp olive oil, 4 minced garlic cloves, 2 tbsp chopped fresh rosemary, 1 tbsp chopped fresh thyme, 1 1/2 tsp salt, and 1 tsp black pepper to form an herb paste.
2. Step 2: Pat dry the 2 lb pork loin roast and rub the herb paste evenly all over the surface. Place pork on a roasting rack in a baking pan.
3. Step 3: Roast pork loin in the preheated oven for 50-60 minutes, or until an internal temperature of 145°F is reached, turning halfway through for even browning.
4. Step 4: While the pork roasts, place 2 lbs peeled and cubed russet potatoes along with 3 peeled garlic cloves into a large pot. Cover with cold water and add 1 tsp salt.
5. Step 5: Bring potatoes and garlic to a boil over high heat, then reduce to medium and simmer for 15-18 minutes until potatoes are fork-tender.
6. Step 6: Drain potatoes and garlic, then return to pot. Add 4 tbsp unsalted butter and 1/2 cup whole milk, mashing until smooth and creamy.
7. Step 7: Remove pork from oven, tent with foil, and let rest for 10 minutes before slicing. Serve sliced pork loin with garlic mashed potatoes.