Main Courses
A perfectly cooked 1-pound pork loin delivers that ideal balance of crispy edges and a juicy, pink center—something I've spent years perfecting in my kitchen. This recipe transforms a simple cut into a restaurant-worthy main course without requiring advanced techniques.
The secret lies in proper seasoning and precise cooking temperatures, ensuring every bite is tender yet firm enough to hold its shape.
With just 15 minutes of active prep and 20 minutes of cooking time, you'll have a dish that feels special yet remains approachable for weeknight dinners. The key is using a cast iron skillet to sear the pork, locking in those flavors while creating a golden crust.
I've tested this recipe countless times—whether for a solo meal or a small gathering—because it consistently delivers that perfect doneness.
What you'll end up with is a juicy pork loin that's perfectly seasoned, with a caramelized exterior that adds depth to every bite. The internal temperature reaches 140°F for medium-rare, ensuring that pink center we all love.
This method works beautifully whether you're serving it with roasted vegetables, mashed potatoes, or a fresh salad—it's versatile enough to fit any menu.
For those who love pork, this recipe is a game-changer—simple enough for beginners but refined enough to impress. The technique I've developed ensures you'll never overcook or dry out the meat, making it the go-to method for anyone who wants restaurant-quality results at home. Let's get started!
Ingredients for 1 pound pork loin
Juicy pork loin with a crispy crust—this short list delivers restaurant-quality results at home.
| Ingredient | Amount | Notes |
|---|---|---|
| Bone-In Pork Loin 🥓 | 1 lb | Center-cut, 1-inch thick |
| Kosher Salt 🧂 | 1 ½ tsp | Diamond Crystal preferred |
| Freshly Ground Black Pepper 🌶️ | ½ tsp | Cracked peppercorns preferred |
| Extra-Virgin Olive Oil 🫒 | 2 tbsp | High smoke point preferred |
| Unsalted Butter 🧈 | 2 tbsp | Cold, cubed for searing |
| Fresh Rosemary 🌿 | ¼ cup | Finely chopped, stems removed |
| Fresh Thyme Leaves 🌿 | ¼ cup | From 4 sprigs, stems removed |
| Garlic Cloves 🧄 | 4 cloves | Smashed, skin-on |
| Fresh Lemon Juice 🍋 | 1 tbsp | From 1 small lemon |
| All-Purpose Flour 🌾 | ½ cup | For dredging pan |
| Cast Iron Skillet 🍳 | 1 whole | 10-12 inch, preheated |
The pork loin is the star here, so quality matters. Look for a bone-in center-cut roast with visible marbling—Whole Foods or your local butcher usually have the best cuts. A 1-inch thickness is ideal for even cooking. If you can't find bone-in, boneless works too, but bone helps retain moisture. For the herbs, fresh is non-negotiable—dried just won't give that same aromatic punch. I always grab extra rosemary because it's my favorite to garnish on top at the end.
No fresh rosemary? Dried at one-third the amount works in a pinch, but trust me on the fresh version. Running short on butter? Olive oil works too, though butter gives that richer flavor. The flour is just for cleaning the pan—don't skip it, but don't go overboard. For the garlic, smashing the cloves releases more flavor than mincing. And if you're worried about the lemon juice, don't be—it brightens everything without overpowering. The key is letting the pork rest after cooking, so plan ahead for that step.
This recipe reheats beautifully—just warm it gently in the same pan. Keeps 3-4 days in the fridge or 3 months frozen. I always make a double batch because leftovers taste even better the next day. For freezing, wrap tightly in parchment and foil. And if you're serving it immediately, let it rest 10 minutes before slicing—that's when all the juices redistribute. Perfect for meal prep or a special dinner.
Why You'll Love This Recipe
- One-Pan Magic: I swear by this—just sear the bone-in pork loin in olive oil, sprinkle salt and pepper, then finish it with butter while it rests. No extra dishes, no fuss, and the juices stay locked in that meat. My lazy Sundays just got a whole lot easier.
- Crispy-Creamy Duo: That butter basting at the end? Pure gold. The crust is crackling, the inside melts like silk, and honestly, it’s the kind of pork that makes you slow down mid-bite. No fancy marinades—just salt, pepper, and a little patience.
- Weeknight to Dinner Party: Same recipe, different vibes. Toss it with roasted potatoes for a weeknight feast or slice it for a charcuterie board that’ll impress guests. Between us, I’ve served this at both—no one ever questions my cooking.
- Budget-Friendly Leftovers: A pound feeds four, so you’re left with slices for sandwiches or fried rice the next day. The bone-in version even makes broth if you’re feeling ambitious. Not the prettiest leftovers, but they’re ridiculously good.
Step-by-step instructions for pan-seared pork loin
Here's how to achieve that perfect contrast: crispy, golden crust outside with a tender, pink center.
Prepare the Herb Butter and Season the Pork
In a small bowl, combine the 2 tablespoons unsalted butter, 0.25 cup fresh rosemary, 0.25 cup fresh thyme leaves, 4 smashed garlic cloves, and 1 tablespoon fresh lemon juice. Mix until the herbs are evenly distributed throughout the butter. This herb butter will infuse the pork with incredible flavor while keeping it moist during cooking.
Pat the 1 lb bone-in pork loin dry with paper towels—this is crucial for achieving that perfect crispy crust. Season both sides generously with 1.5 teaspoons kosher salt and 0.5 teaspoon freshly ground black pepper. Let the seasoned pork sit at room temperature for 20-30 minutes while you prepare the rest of your ingredients. This step ensures even cooking throughout the meat.
Preheat the Cast Iron Skillet and Sear the Pork
Place the 1 whole cast iron skillet over medium-high heat for 5-7 minutes until it's screaming hot. Add the 2 tablespoons extra-virgin olive oil and let it shimmer for 1 minute—this ensures the oil is hot enough to create that beautiful sear. The skillet should be hot enough that a drop of water sizzles vigorously when flicked onto it.
Carefully place the pork loin in the skillet, laying it flat. Press down gently on the fillet during the first 1-2 minutes to prevent curling, which helps ensure even contact with the pan. Cook undisturbed for 4-5 minutes until the bottom develops a deep golden-brown crust. You'll know it's ready when it releases easily from the skillet—this is the moment that matters.
Flip and Finish Cooking to Juicy Perfection
Flip the pork loin and add the herb butter mixture directly to the skillet. Spoon the melted butter evenly over the top of the pork, basting it with the aromatic herbs. Reduce heat to medium and continue cooking for another 4-5 minutes, basting occasionally with the pan juices. The internal temperature should reach 140-145°F—this ensures a juicy, pink center that's cooked through but still tender.
Here's the thing—pork loin cooks quickly, and it's easy to overcook it. Use a meat thermometer to check the temperature rather than relying on time alone. When the pork reaches the desired temperature, transfer it to a cutting board and let it rest for 5-10 minutes before slicing. This resting period allows the juices to redistribute, ensuring every bite is moist and flavorful.
Slice and Serve with Pan Sauce
Slice the pork loin into ½-inch thick medallions against the grain for maximum tenderness. Spoon any remaining pan juices and herb butter over the top for extra flavor. The sauce should be rich, aromatic, and slightly thickened from the cooking process.
Serve immediately with your choice of sides—roasted vegetables, mashed potatoes, or a fresh salad all pair beautifully with this dish. Each slice should have a crispy, golden crust on the outside and a juicy, pink interior that melts in your mouth. The herb butter adds a bright, aromatic finish that elevates this simple cut of meat into something truly special.
Pro Tips For Making 1 Pound Pork Loin
- SEAR THE BONE FIRST: That bone-in pork loin needs a head start—hit the bone side down in a cold pan, then add oil and butter once it’s smoking. I learned this the hard way: skipping this step means the bone won’t render its flavor into the meat, and your pork ends up tasting bland no matter how much you season later.
- SALT BEFORE SEASONING: Generously coat the pork loin with kosher salt at least 30 minutes before cooking—this seasoning penetrates deeper than a quick sprinkle. I was skeptical until I tried it: the crust locks in better, and the meat stays juicier because the salt draws out moisture before the heat hits.
- DON’T SKIP THE REST: Let the pork loin rest for a solid 5-10 minutes under foil after pulling it from the oven or pan. I know, I know—you’re hungry—but cutting into it too soon turns that perfect juicy center into a sad, dry mess. (Your future self will hate you if you skip this.)
- USE THE BONE’S FAT: Once the pork loin is cooked, tilt the pan and spoon that melted butter and rendered fat over the top—it bastes the meat in its own richness. I used to discard it, but now I make sure to finish with this step. It’s the difference between “good” and “restaurant-quality.”
Dietary considerations for this recipe
Gluten-Free Adaptation
This recipe is naturally gluten-free since it only requires flour to clean the pan—not to coat the pork. However, if you're concerned about cross-contamination, use a dedicated cast iron skillet or line it with parchment paper.
The herb butter and lemon juice add brightness without any gluten-containing ingredients. Just ensure your kosher salt is certified gluten-free if you're highly sensitive. 💛
Low-Carb Options
For a low-carb version, skip the flour entirely and simply wipe down the skillet with a paper towel to remove any residue. The pork loin itself is already a lean, protein-rich cut with minimal carbs.
The herb butter and lemon juice provide flavor without adding significant carbohydrates. This makes it perfect for keto or low-carb diets while keeping all the deliciousness intact.
Dairy-Free Substitutes
If you're avoiding dairy, replace the butter with an equal amount of olive oil or dairy-free margarine. I recommend Miyoko's unsalted vegan butter for the best flavor and texture. The olive oil will still create a rich, flavorful crust when seared properly.
Just be sure to use a high-quality extra-virgin olive oil with a high smoke point to prevent burning.
Allergen-Friendly Adjustments
For nut allergies, this recipe is already safe since it contains no nuts. If you're allergic to herbs, simply omit the rosemary and thyme and increase the garlic to 6 smashed cloves for extra flavor.
The lemon juice and salt will still provide a well-rounded seasoning. Always check your butter for hidden allergens if you're highly sensitive.
Lean Protein Focus
Pork loin is naturally a lean protein, making it ideal for those watching their fat intake. A 1-pound portion contains about 40 grams of protein with only 15 grams of fat.
The herb butter adds richness without significantly increasing calories. For an even leaner version, reduce the butter to 1 tablespoon and compensate with extra lemon juice for brightness.
Nutrition facts
Frequently asked questions
Can I use boneless pork loin instead of bone-in?
Yes, boneless pork loin works perfectly! Just reduce cooking time by 1-2 minutes per side since it cooks slightly faster without the bone's insulating effect. The herb butter method remains the same, but slice against the grain for maximum tenderness. For best results, choose a 1-inch thick cut to maintain even cooking.
What's the best way to check doneness without a thermometer?
For medium-rare (140-145°F), press the thickest part with your finger—it should feel very slightly springy, like pressing a ripe avocado. The juices should run clear when you cut into it. If using a knife, cut into the center: pink juices with no red blood indicate perfect doneness. Overcooking turns the meat gray and dry.
How do I prevent the pork from drying out?
Three key steps:
- Pat it bone-dry before seasoning,
- Don't overcook (use a thermometer!), and
- Rest for 5-10 minutes before slicing. The herb butter keeps it moist while searing creates a protective crust. For extra insurance, brining in 1 cup water + 1 tbsp salt for 30 minutes before cooking adds juiciness.
Can I make this ahead of time?
Cook the pork as directed, then cool completely and refrigerate for up to 3 days. Reheat gently in the same skillet with 1 tbsp olive oil over low heat for 3-4 minutes per side. For freezing, wrap tightly in parchment and foil—it keeps 3 months. Thaw overnight in the fridge before reheating. The flavors actually improve after resting!
What's the best side dish pairing?
For a classic Southern meal, try creamy mashed sweet potatoes or roasted Brussels sprouts with bacon. For lighter options, a crisp arugula salad with lemon vinaigrette or garlic sautéed green beans complement the pork's richness. The herb butter sauce also pairs beautifully with buttery egg noodles or polenta. Pro tip: Save some pan juices to drizzle over sides!