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Cooking a 10-pound pork loin to perfection requires patience and precision—but the result is worth every minute. This recipe delivers a juicy, medium-rare core with a flavorful crust, whether you're feeding a crowd or celebrating a special occasion.
I've perfected this method over years of cooking for large gatherings, ensuring the meat stays tender and flavorful from edge to edge.
The secret lies in slow-roasting at a controlled temperature, allowing the pork to cook evenly without drying out. A simple herb crust or garlic rub adds depth, while monitoring the internal temperature ensures you hit that ideal 145°F for juicy, melt-in-your-mouth bites.
No fancy equipment needed—just time and attention to detail.
By the time you carve into this pork loin, you'll have a centerpiece that's crisp on the outside, tender on the inside, and packed with flavor. The aroma alone will have everyone gathering around the table, and the slices will disappear faster than you can say "second helping."
Pair it with roasted potatoes, grilled vegetables, or a fresh salad for a complete meal. This recipe scales beautifully, so you can adjust for smaller cuts if needed. Let's get started on a dish that's sure to impress.
Ingredients for 10 lb pork loin
Ten pounds of pork, simple seasonings, and hours of patience transform into a showstopping centerpiece.
| Ingredient | Amount | Notes |
|---|---|---|
| Bone-In Pork Loin 🐖 | 10 lb | Center-cut, 1.5-inch thickness |
| Kosher Salt 🧂 | 2 tbsp | Diamond Crystal preferred |
| Freshly Ground Black Pepper 🌶️ | 1 ½ tbsp | Coarse grind for texture |
| Fresh Rosemary 🌿 | ½ cup | Finely chopped, stems removed |
| Fresh Thyme 🌿 | ¼ cup | Leaves only, stems discarded |
| Garlic Cloves 🧄 | 10 cloves | Smashed, not minced |
| Extra-Virgin Olive Oil 🫒 | ½ cup | Fruity variety for flavor |
| Yellow Onion 🧅 | 1 whole | Thinly sliced, for garnish |
| Fresh Parsley 🌿 | ¼ cup | Chopped, for garnish |
| Unsalted Butter 🧈 | ½ cup | Cold, cubed for basting |
| Apple Cider Vinegar 🍎 | 1 tbsp | For basting liquid |
| Honey 🍯 | 2 tbsp | Wildflower preferred |
The pork loin is non-negotiable here—bone-in ensures moisture retention, while a 1.5-inch thickness guarantees even cooking. Source it from a trusted butcher or Costco's pre-portioned cuts for consistency. Look for good marbling; the fat renders beautifully during roasting. Fresh herbs make all the difference—Whole Foods or local farmers markets have the best quality, but grocery store bunches work if they're bright and fragrant. The garlic should smell pungent, not musty, and the olive oil should be cold-pressed for maximum flavor.
No fresh rosemary? Dried works at half the amount, but it lacks the bright aroma. Substitute thyme with oregano if needed, though the flavor will shift slightly. For the honey, agave nectar is a 1:1 swap if you're avoiding refined sugar. The butter must be unsalted—salted throws off the seasoning balance. If you're short on time, skip the basting liquid and just use melted butter, but you'll lose some depth. The onion and parsley are purely decorative, so green onions or cilantro work in a pinch for garnish.
This pork is best served immediately after roasting, but it reheats beautifully if you've got leftovers—low and slow in a 275°F oven with a splash of broth. The roasted pork keeps for 3-4 days in the fridge, wrapped tightly in foil. For longer storage, freeze portions for up to 3 months. I always make extra—it disappears fast at gatherings. The crust stays crisp for about 2 hours after carving, so serve it promptly if you're aiming for that perfect crunch.
Why You'll Love This Recipe
- One-Pan Magic: The bone-in pork loin roasts right alongside its own juices—no fancy pans, no flipping, just set it and forget it. I swear, the only tools you’ll need are a knife, a cutting board, and a timer.
- Herb-Crusted Perfection: That rosemary and thyme? They cling to the meat like a hug, while the kosher salt and pepper turn the crust into something crispy enough to make you want to eat it first. Honestly, the aroma alone sells me every time.
- Party-Ready Crowdpleaser: Whether it’s a Sunday dinner or a holiday spread, this feeds a crowd without the stress. Slice it thin, serve it with roasted potatoes, and suddenly you’re the hero of the meal—no takeout needed.
- Leftovers That Don’t Suck: Between us, most roasts turn into sad, dry leftovers. Not this one. The bone keeps it moist, and the flavor only gets better the next day—perfect for sandwiches or reheated with a splash of broth. Budget win, time win.
Step-by-step instructions for slow-roasted pork loin
Master this technique and you'll achieve a pork loin with a crisp exterior and a perfectly juicy, medium-rare core every time.
Prepare and Season the Pork Loin
Remove the pork loin from the refrigerator and let it sit at room temperature for 1 hour before cooking. This ensures even cooking and prevents cold spots in the center. Pat the meat dry thoroughly with paper towels—moisture is the enemy of crispy skin and even browning.
In a small bowl, combine the 2 tablespoons kosher salt, 1.5 tablespoons freshly ground black pepper, 0.5 cup finely chopped fresh rosemary, and 0.25 cup fresh thyme leaves. Rub this mixture all over the pork loin, pressing firmly so the seasoning adheres to the surface. Pay special attention to the fat cap and any exposed areas.
Next, create a garlic-infused oil by combining the 0.5 cup extra-virgin olive oil with the 10 smashed garlic cloves. Brush this mixture generously over the seasoned pork loin. The garlic will infuse flavor while helping create a beautiful crust during roasting.
Set Up the Roasting Pan and Preheat
Place the seasoned pork loin on a rack set inside a rimmed baking sheet. The rack elevates the meat, allowing hot air to circulate underneath for even cooking. In a small saucepan, melt the 0.5 cup unsalted butter over low heat, then stir in the 1 tablespoon apple cider vinegar and 2 tablespoons honey until smooth. This basting mixture will create a glossy finish.
Preheat your oven to 325°F. This lower temperature is crucial for achieving that perfect medium-rare core while allowing the exterior to develop a beautiful crust. Place a meat thermometer in the thickest part of the pork loin—this will help you monitor the internal temperature precisely.
Roast to Medium-Rare Perfection
Carefully transfer the pork loin to the preheated oven and roast for 2 hours and 15 minutes. This timing will give you an internal temperature of 130-135°F—the ideal range for medium-rare pork loin. The meat should be slightly pink in the center with a firm but still juicy texture.
About 30 minutes before the pork loin is done, baste it with the honey-butter mixture. Use a pastry brush to spread it evenly over the surface, focusing on the exposed areas. This basting will enhance the flavor and create a beautiful caramelized crust. The pork loin is ready when the internal temperature reaches 130°F and a knife inserted into the thickest part leaves juices that run slightly pink.
Rest and Garnish for Serving
Remove the pork loin from the oven and transfer it to a cutting board. Tent loosely with aluminum foil and let it rest for 15-20 minutes. This resting period is essential—it allows the juices to redistribute throughout the meat, ensuring each slice remains moist and flavorful.
While the pork loin rests, thinly slice the whole yellow onion and chop the 0.25 cup fresh parsley. Arrange the sliced onions on a serving platter, then place the pork loin on top. Garnish with the chopped parsley and drizzle any remaining honey-butter mixture over the top. The onions will add a touch of sweetness and freshness, complementing the rich flavors of the pork loin.
Pro Tips For Making 10 Lb Pork Loin
- USE A MEAT THERMOMETER: A 10 lb pork loin isn’t forgiving—guessing won’t cut it. Insert the probe into the thickest part (avoid bone) and pull it at 145°F internal temp (yes, even if it looks underdone). I learned this after slicing into a dry, overcooked slab that had sat too long at 135°F. Let it rest 10-15 minutes first—juices redistribute, or you’ll lose flavor to the plate.
- TRIM THE FAT CAP: That thick layer of fat on top? It’s not your friend here. Use a sharp knife to slice through it about ¼-inch from the meat, leaving just a thin barrier to protect the loin. I used to skip this, thinking it’d add flavor—until I realized it turned to grease and made the crust soggy. A dry surface = better sear.
- SALT THE NIGHT BEFORE: Pork loin needs time to absorb salt, not just sit there looking pretty. Generously coat the entire surface 12-24 hours ahead (yes, even the bone) and refrigerate uncovered. The salt draws out moisture, which then reabsorbs, keeping the meat juicy. I was skeptical until I tried it—now I never skip it.
- LOW AND SLOW AFTER SEARING: After getting that golden crust on a screaming-hot pan, drop the heat to 275°F and finish in the oven. Rushing to high heat now will cook the outside faster than the inside, leaving you with a dry exterior. Cover loosely with foil (shiny side down) and let it cook until the temp hits 145°F—patience here makes all the difference.
Serving suggestions for 10 lb pork loin
Classic Southern Sides
Nothing complements roasted pork loin like classic Southern sides that soak up the juices beautifully.
I always serve creamy mac and cheese—use a Gruyère-cheddar blend with a touch of mustard powder for depth. Collard greens slow-cooked with smoked turkey neck and a splash of apple cider vinegar add tangy contrast.
For a lighter option, cornbread made with sharp cheddar and jalapeños pairs perfectly with the pork's richness. 🌶️
Fresh Vegetable Contrasts
Bright, fresh vegetables cut through the richness of pork loin beautifully. Roasted Brussels sprouts with balsamic glaze and crispy pancetta add a smoky-sweet balance. For a summer gathering, grilled zucchini and yellow squash tossed with lemon zest and fresh basil keep the meal light.
I also love shaved fennel salad with orange segments and toasted walnuts—the anise notes complement the pork's herbal crust. 🍊
Starch Pairings
For a heartier meal, garlic mashed potatoes with roasted garlic and sour cream create the ultimate comfort combo. Creamy scalloped potatoes layered with Gruyère and chives add a restaurant-worthy touch. If you're serving a crowd, herb-roasted potatoes tossed with rosemary, thyme, and olive oil are foolproof and always disappear first.
I swear by Alaskan butter potatoes for their buttery texture and rich flavor. 🥔
Dipping Sauces
A good dipping sauce elevates any pork loin meal. Honey-mustard sauce—just ¼ cup Dijon, ¼ cup honey, and 2 tbsp apple cider vinegar—adds sweet-tangy brightness. For a smoky twist, BBQ sauce with chipotle peppers and a splash of bourbon brings depth.
I also make a garlic-herb aioli with mayonnaise, minced garlic, and fresh dill that guests can't resist. Serve in small bowls for dipping or drizzling. 🍯
Beverage Pairings
Southern wines shine with pork loin. A dry Riesling from Germany—like Dr. Loosen Blue Slate—cuts through the fat with its crisp acidity. For beer lovers, Belgian-style witbiers like Stella Artois or Hoegaarden add a refreshing citrus note.
If you're serving BBQ-glazed pork, a bold red like Cabernet Sauvignon holds its own against the smoky flavors. For non-alcoholic options, sparkling apple cider with a cinnamon stick is a crowd-pleaser. 🍷
Nutrition facts
Frequently asked questions
How do I adjust this recipe for a smaller 5 lb pork loin?
The cooking time and temperature stay the same, but reduce all seasonings and basting ingredients by half. A 5 lb pork loin will cook about 1 hour and 45 minutes at 325°F to reach 130-135°F internal temp. The key is maintaining the same thickness—if your cut is thinner, reduce time by 10-15 minutes.
Can I cook this pork loin in a smoker instead of the oven?
Smoke at 225°F with a light cherry or apple wood for 3-4 hours until reaching 130°F internal temp. Baste with the honey-butter mixture in the last 30 minutes for extra flavor. The low-and-slow method works perfectly for tender, juicy results. Just monitor closely—smokers can vary in temperature control.
What's the best way to carve a 10 lb pork loin?
First, slice against the grain at a 45-degree angle for maximum tenderness. Start at one end and cut through the bone, then turn the loin and repeat. For even slices, use a long, sharp carving knife and work in 1-inch thick portions. The bone-in cut makes carving easier—just follow the natural curves of the meat.
Why did my pork loin turn out dry?
Overcooking is the #1 cause—pork loin should never exceed 145°F internal temp. For medium-rare, stop at 130-135°F and let it rest. Also check your thermometer accuracy and avoid cutting into the meat until it's fully rested. If using a meat mallet, don't pound it too hard—this can break muscle fibers and dry it out.
How far ahead can I prepare the seasoning mix?
You can prep the herb rub 24 hours ahead and store it in an airtight container in the fridge. The garlic-infused oil should be made fresh day-of for maximum flavor. If prepping ahead, keep the butter separate until ready to melt. The seasoning mix stays fresh for 3 days in the fridge or 3 months in the freezer.