AIP Pork Tenderloin Recipe: Herb-Infused Roast With Perfectly Medium-Rare Core

This AIP chicken tenderloin recipe delivers the same satisfying, juicy results as traditional pork tenderloin—but without the pork. After years of perfecting AIP-friendly proteins, I've developed a method that ensures tender, medium-rare centers with a flavorful herb crust.

The key lies in precise cooking times and strategic herb placement that infuses flavor without overpowering the delicate meat.

What sets this recipe apart is its simplicity and effectiveness for autoimmune protocol diets. Unlike many AIP recipes that rely on bland seasonings, this version uses a carefully balanced blend of rosemary, thyme, and garlic-infused olive oil to create depth of flavor.

The chicken tenderloins cook quickly in the oven, reaching perfect doneness in just 20 minutes—ideal for busy weeknights or meal prep.

By the time these tenderloins emerge from the oven, you'll have juicy, pink centers with a golden, herb-encrusted exterior. The texture is restaurant-quality, with each bite offering a perfect balance of savory herbs and tender meat.

This dish pairs beautifully with roasted AIP-compliant vegetables or cauliflower mash, creating a complete, satisfying meal.

The real magic happens in the sauce—a simple yet flavorful combination of coconut aminos, olive oil, and fresh herbs that complements the tenderloins without overpowering them. This recipe transforms what could be a restrictive diet into a culinary experience worth looking forward to. Let's get started!

Ingredients for aip pork tenderloin

Precision-crafted ingredients for restaurant-quality AIP pork tenderloin with perfect medium-rare core.

The pork tenderloin must be center-cut for even cooking—avoid the ends where the meat can be tough. Local butchers often carry premium cuts, but the standard supermarket variety works well if you trim any visible fat. Fresh herbs are non-negotiable here: organic rosemary and thyme from the grocery store's produce section will give you the best flavor. For garlic, peel and mince fresh rather than using pre-minced—it makes a noticeable difference. The coconut aminos should be gluten-free and ideally from a brand like Coconut Secret or Annie Chun's, which are widely available at health food stores.

No fresh rosemary? Dried rosemary at half the amount will work in a pinch, though fresh is ideal. Substitute dried thyme similarly, but remember it's less potent. For those avoiding coconut aminos, AIP-compliant fish sauce (like Red Boat) can replace it, though the flavor profile will differ slightly. The bone broth should be homemade if possible—store-bought AIP versions from brands like Kettle & Fire are a solid backup. If you can't find fresh ginger, powdered ginger at one-third the amount is acceptable, though texture will change. Lemon juice can be substituted with lime juice for a slightly different but still complementary flavor.

Pork tenderloin should be used within 3 days of purchase for optimal freshness, stored in the coldest part of your fridge. Fresh herbs last 5-7 days when wrapped in damp paper towels and sealed in a container. The coconut aminos and bone broth can be kept unopened for 12 months in a pantry, while opened containers should be refrigerated and used within 6 months. For meal prep, portion the cooked tenderloin into individual servings and store with a light coating of olive oil to maintain moisture for up to 4 days in the fridge or 3 months frozen.

Step-by-step instructions for herb-infused AIP pork tenderloin

Master this technique and you'll achieve a perfectly medium-rare core with crispy exterior every time.

In a small bowl, combine the 0.25 cup extra-virgin olive oil, 0.25 cup finely chopped fresh rosemary, 0.125 cup fresh thyme leaves, 6 minced garlic cloves, 0.125 cup coconut aminos, 1 tbsp freshly grated ginger, 1.5 tsp sea salt, and 0.5 tsp freshly ground black pepper. Whisk until fully emulsified—this marinade will infuse the pork with deep, aromatic flavor while keeping it tender.

Pat the 1.5 lb pork tenderloin completely dry with paper towels, then rub the marinade all over, pressing it into the meat. Place the tenderloin on a plate and let it sit at room temperature for 30 minutes—this ensures even cooking and prevents cold spots in the center. The marinade should cling to the surface, creating a protective barrier that locks in moisture.

Heat a heavy skillet over medium-high heat until it's just smoking hot. Add the 1 tbsp melted coconut oil and swirl to coat the pan. Place the pork tenderloin in the skillet and sear on all sides for 2-3 minutes per side until it develops a deep golden-brown crust. This step is critical—it creates the Maillard reaction that builds flavor and texture.

Don't move the pork around once it's in the pan. Let it develop color undisturbed, then carefully flip to ensure even browning. Once seared, transfer the tenderloin to a plate and tent loosely with foil to keep it warm while you prepare the finishing elements.

Preheat your oven to 375°F. Place the seared pork tenderloin on a wire rack set over a baking sheet lined with parchment paper. Pour the 0.5 cup AIP-compliant bone broth into the skillet and scrape up any browned bits from the bottom with a wooden spoon—this creates a flavorful liquid that will later baste the pork.

Roast the pork for 15-18 minutes, or until the internal temperature reaches 140°F at the thickest part of the meat. Use a meat thermometer for accuracy—this ensures a perfectly medium-rare core while maintaining juiciness. The pork should feel firm but still yield slightly when pressed gently with your fingers. Remove from the oven and let it rest for 10 minutes before slicing.

While the pork rests, heat the reserved bone broth in the skillet over medium heat until it reduces by half, about 3-4 minutes. Stir in the 2 tbsp fresh lemon juice and simmer for another 1 minute to brighten the flavors. This pan sauce will elevate the dish with a tangy finish.

Slice the pork tenderloin into ½-inch thick medallions and drizzle each serving with the lemon-infused bone broth. The result should be a perfectly medium-rare center with a crispy exterior, infused with herbs and brightened by citrus. Serve immediately while the pork is still juicy and the sauce is warm.

Pro cooking tips for aip pork tenderloin

Precision Timing

This recipe hinges on 140°F internal temperature for that perfect medium-rare center—any higher risks drying out the meat. I use a ThermoWorks Smoke thermometer because it's accurate and fast, but a basic instant-read like Taylor Precision works too.

The 10-minute rest after roasting is non-negotiable—it lets juices redistribute, so you don't end up with dry slices. 🌡️

Herb Infusion Hack

Fresh herbs make all the difference here. I pulse the rosemary and thyme in my KitchenAid food processor for 2 seconds to break them down slightly—this releases more flavor without turning them to paste. For extra aroma, I also add 1 crushed garlic clove directly to the marinade while mixing.

The key is letting the marinade sit on the pork for at least 30 minutes—I often do this while prepping sides.

Pan Sauce Secrets

That bone broth reduction transforms a simple pan sauce into a flavor powerhouse. After roasting, I deglaze the skillet immediately while it's still hot—this lifts all those browned bits that pack serious flavor. For a richer sauce, I whisk in 1 tsp coconut oil at the end.

The lemon juice brightens everything, but I always taste first—sometimes I add ½ tsp more if the sauce needs more tang.

Equipment Essentials

You don't need fancy gear, but these tools make life easier: a cast-iron skillet (I use my Lodge 10.25-inch) for searing, a wire rack (from Amazon) for even roasting, and sharp chef's knife (my Wüsthof 8-inch) for clean slices.

For AIP cooks, I always recommend glass storage containers—they're microwave-safe and won't leach chemicals like some plastics.

Temperature Control

Oven temperature fluctuations are the #1 enemy of perfect pork. I always preheat for 20 minutes and use an oven thermometer to confirm it's actually at 375°F. If your oven runs hot, reduce to 350°F—I've seen many home ovens that are 25°F off from their setting.

The 15-18 minute roast time assumes a properly calibrated oven, so don't rush it.

Resting Technique

This is where many home cooks mess up. Tenting with foil traps steam, but I prefer loosely tenting—just enough to keep it warm without creating a sauna. The 10-minute rest might feel long, but it's worth it.

I often use this time to prep my roasted sweet potatoes or sautéed green beans so everything comes together at once. Pro tip: If you're short on time, rest for 5 minutes and serve immediately—just expect slightly more juices pooling on the plate. 💡

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