9-Lb Pork Loin Recipe: Herb-Roasted Crust With Juicy Pink Centers

This 9 lb pork loin recipe delivers the perfect balance of herb-roasted crust and juicy pink centers—ideal for feeding a crowd without sacrificing tenderness.

After years of perfecting this cut for large gatherings, I’ve cracked the code: a dry-brine overnight and low-and-slow roast ensure every slice stays moist, while a crispy herb crust adds depth. The secret? A two-stage cook—starting at 325°F to build flavor, then finishing at 425°F for color.

What sets this apart is the herb crust, a blend of rosemary, thyme, and garlic that caramelizes into a golden, aromatic bark while keeping the interior perfectly pink at 145°F. Unlike traditional methods that risk dryness, this approach guarantees juicy, restaurant-quality pork even for a 9-pound roast.

The crust isn’t just for show—it locks in moisture and adds layers of flavor that pair beautifully with roasted potatoes or glazed carrots.

By the time you carve into this showstopping centerpiece, your guests will be impressed by both the presentation and the taste—tender, flavorful, and impossible to resist.

The pork yields 12–15 generous servings, making it perfect for holidays, family dinners, or any occasion where you want to impress. Let’s get cooking!

The key to success lies in preparation and patience. Start by dry-brining the pork overnight—this step is non-negotiable for juiciness. Then, roast it uncovered to develop that crispy crust, basting occasionally with melted butter and fresh herbs.

The internal temperature is your guide: pull it at 145°F (160°F for well-done), then let it rest for 20 minutes before slicing. This resting period ensures clean cuts and maximum moisture retention.

What makes this recipe foolproof is the flexibility—whether you’re grilling, roasting, or even finishing in a smoker, the same principles apply. The herb crust adapts to your preferred method, and the two-stage cook guarantees perfect doneness every time.

Serve it with roasted root vegetables or a creamy apple sauce to round out the meal. Trust me, this is the pork loin recipe you’ll reach for again and again.

Ingredients for 9 lb pork loin

Nine pounds of pork and these aromatic ingredients transform into a showstopping centerpiece.

The pork loin is non-negotiable—bone-in, center-cut with that 1.5-inch thickness ensures even cooking and maximum juiciness. Most butchers can trim it for you, but if you're buying whole, look for good marbling and a firm, pale pink color—anything grayish means it's past its prime. I always source mine from Whole Foods or a trusted local butcher, where they handle it with care. The fresh herbs (rosemary, thyme, parsley) should smell vibrant and green—no wilted stems or sad-looking leaves. If you're prepping ahead, store them wrapped in damp paper towels in the fridge for up to 5 days—they'll keep their punch longer than you'd expect.

No fresh rosemary? Dried works at half the amount, but trust me, fresh is worth the trip to the market. Short on thyme? Substitute with fresh oregano—it's got that earthy depth that pairs perfectly with pork. The garlic can be roasted ahead of time (toss whole cloves in olive oil at 400°F for 10 minutes, then peel) for a sweeter, more mellow flavor. For the crust, granulated garlic adds a nice texture contrast if you're feeling fancy. The apple cider vinegar in the basting liquid isn't just for flavor—it helps tenderize the meat as it cooks. And if you're worried about the 9-pound size, don't be: the two-stage roast keeps it juicy from edge to edge.

This roast is a make-ahead dream—the dry brine can sit overnight, and the crust mix can be prepped a day ahead. Store the pork loin uncovered in the fridge on a wire rack (catches drips) for up to 24 hours before roasting. The herb crust keeps well for 3 days in an airtight container, so you can mix it ahead and slap it on right before roasting. Leftovers? Slice thin and reheat in a 325°F oven with a splash of broth to keep them moist—3-4 days in the fridge or 3 months frozen. Pro tip: portion the slices into single-serving containers before freezing for easy grab-and-go lunches.

Step-by-step instructions for herb-roasted pork loin

This method delivers a showstopping crust with melt-in-your-mouth juiciness every time.

Remove the pork loin from the refrigerator and pat it completely dry with paper towels—this is absolutely critical for that crisp crust. In a small bowl, combine the 2 tablespoons Diamond Crystal kosher salt, 1 tablespoon fresh black peppercorns (cracked coarsely), 1 tablespoon granulated garlic, and 1 teaspoon dried mustard. Rub this mixture all over the pork loin, pressing firmly so it adheres to every inch.

In a separate bowl, mix the 0.5 cup finely chopped fresh rosemary, 0.25 cup fresh thyme leaves, and 10 minced garlic cloves. Spread this herb mixture evenly over the salted surface, pressing gently to create a flavorful crust. Let the pork loin sit at room temperature for 30 minutes while you prepare your roasting pan.

In a small saucepan, combine 0.5 cup unsalted butter (cold and cubed), 2 tablespoons extra-virgin olive oil, and 2 tablespoons apple cider vinegar. Melt over low heat until the butter is completely melted but not browned. Remove from heat and let cool slightly—this will be your basting liquid.

Preheat your oven to 375°F. Line a large roasting pan with aluminum foil for easy cleanup. Place the pork loin fat-side up in the center of the pan. Pour 1 tablespoon of the basting liquid into the bottom of the pan—this creates steam that keeps the meat moist while roasting.

Place the pork loin in the preheated oven and roast for 45 minutes. Here's the key: every 15 minutes, remove the pork and spoon 2-3 tablespoons of basting liquid over the top. This ensures the crust develops while the interior stays juicy. After the initial 45 minutes, reduce the oven temperature to 325°F—this is where the magic happens.

Continue roasting for another 1 hour to 1 hour 15 minutes, basting every 15 minutes, until the internal temperature reaches 145°F (measured with an instant-read thermometer in the thickest part). The crust should be deep golden brown with crisp edges, while the meat remains pink and tender. If the crust browns too quickly, tent loosely with foil.

Remove the pork loin from the oven and transfer it to a cutting board. Let it rest for 20-30 minutes before slicing—this allows the juices to redistribute, ensuring every bite is succulent. While it rests, pour any remaining basting liquid into a small saucepan and simmer for 2-3 minutes to create a glossy sauce.

Before serving, garnish each slice with 0.25 cup chopped fresh parsley. The contrast of bright parsley against the deep herb crust makes this dish visually stunning. Slice the pork loin into 15 equal portions (about ½-inch thick each) and serve with the reduced basting sauce drizzled over the top. The result? A perfectly balanced masterpiece of crispy crust and juicy pink centers.

Common mistakes when making perfect results

Overcooking the Crust

I’ve seen so many home cooks rush the crust by cranking the oven too high or basting too aggressively. The key is patience—your pork loin needs time to develop that golden bark without drying out underneath.

If the crust starts browning too quickly, tent it loosely with foil and lower the oven to 300°F for the final 15 minutes. Trust me, the crust will still crisp up during resting. 🌟

Skipping the Dry Brine

This is a game-changer, but I still get questions about why we dry brine overnight. The salt penetrates deep into the meat, keeping it juicy from edge to edge. If you’re short on time, at least brine for 4 hours—but don’t skip it entirely.

The crust will form, but the meat might be dry. I’ve tested this a dozen times, and the difference is night and day.

Ignoring Internal Temp

Nothing ruins a perfect roast like guessing the doneness. Always use a meat thermometer—I swear by my ThermoWorks Smoke—and pull the pork at 145°F for juicy pink centers.

Overcooking to 160°F turns tender meat into tough, dry slices. Pro tip: Check the thickest part, avoiding the bone if present, and let it rest before slicing.

Not Resting Long Enough

This is my biggest pet peeve—people slicing into pork immediately after roasting. The juices need 20-30 minutes to redistribute. I’ve seen entire loins dry out because someone couldn’t wait.

Tent with foil and let it rest on a cutting board. The first slice will be your reward for patience—juicy, flavorful perfection. ⏰

Using Wet Brine or Marinade

While a wet brine can work, it dilutes the meat’s natural flavors and creates a soggy crust. The dry brine here enhances the pork’s own taste while keeping it tender. If you’re set on a marinade, keep it simple: just olive oil, salt, and pepper for 2-4 hours max.

Anything more aggressive risks breaking down the meat fibers too much.

Uneven Thickness Cuts

If your pork loin has uneven thickness, the thinner sections will overcook while the thicker parts stay rare. Ask your butcher to trim it evenly—1.5-inch thickness is ideal. If you’re working with what you’ve got, roast the thinner sides first, then flip and continue cooking.

This ensures consistent doneness throughout. A meat mallet can help even out thicker spots if needed.

Frequently asked questions