Slow Cooker Pork Tenderloin

6 minutes read

Slow Cooker Pork Tenderloin is one of those dinners that’s easy to put together in the morning and still feels like a proper meal by dinnertime. The pork cooks gently in a savory sauce with garlic, herbs, and a little sweetness, leaving you with tender slices and plenty of flavorful juices.

Pork tenderloin is naturally lean, so the key is not to cook it for longer than necessary. Unlike a pork shoulder, it doesn’t need hours and hours in the slow cooker to become tender.

This recipe is especially handy on busy weekdays, but it’s also nice enough for a Sunday dinner. Serve it with mashed potatoes, roasted vegetables, or something green, and spoon some of the sauce over everything.

Why It Works

The slow cooker creates a gentle cooking environment that helps the pork stay tender while it absorbs the flavors around it. A simple mixture of chicken broth, garlic, Dijon mustard, brown sugar, and herbs gives the meat a savory-sweet flavor without covering up the pork itself.

Searing the tenderloin first is worth the extra few minutes. It adds a browned exterior and gives the finished dish a deeper, more developed flavor.

The sauce also does double duty. It keeps the pork moist while cooking and can be thickened at the end into a spoonable gravy for serving.

Ingredients You’ll Need

Pork Tenderloin

Use about 1½ pounds of pork tenderloin, preferably in one or two evenly sized pieces. Pork tenderloin is different from pork loin, so don’t substitute a large pork loin roast without adjusting the cooking time.

Garlic, Dijon, And Brown Sugar

Fresh garlic brings savory flavor, Dijon mustard adds a little sharpness, and brown sugar balances everything with mild sweetness. Together, they make a simple sauce that works beautifully with pork.

Chicken Broth And Herbs

Chicken broth provides the cooking liquid, while dried thyme, rosemary, salt, and black pepper round out the seasoning. Fresh herbs can be used if you have them, but dried herbs are convenient here.

Cornstarch

A little cornstarch mixed with cold water thickens the cooking liquid after the pork is finished. This turns the juices into a quick sauce rather than leaving them thin and watery.

How To Make Slow Cooker Pork Tenderloin

Season And Sear The Pork

Pat the pork tenderloin dry with paper towels, then season it generously with salt and black pepper.

Heat a tablespoon of olive oil in a skillet over medium-high heat. Sear the pork for about 2 minutes per side, turning until it has a nicely browned exterior. It doesn’t need to be cooked through at this stage.

Build The Sauce

Place the seared pork in the slow cooker. Whisk together the chicken broth, minced garlic, Dijon mustard, brown sugar, thyme, and rosemary, then pour the mixture around the pork.

Try not to completely cover the tenderloin with liquid. The slow cooker will produce additional juices as it cooks.

Cook Until Tender

Cover and cook on LOW for about 2½ to 3½ hours, depending on the size of the tenderloin and your slow cooker.

Start checking the internal temperature toward the earlier end of that range. Pork tenderloin is ready when the thickest part reaches 145°F (63°C). A thermometer is much more reliable than judging doneness by cooking time alone.

Rest And Thicken The Sauce

Transfer the pork to a cutting board and let it rest for about 5–10 minutes before slicing.

Meanwhile, pour the cooking liquid into a small saucepan if desired. Mix 1 tablespoon cornstarch with 2 tablespoons cold water, stir it into the liquid, and simmer ge

FAQs

Can I Skip Searing The Pork?

Yes. You can place the seasoned pork directly into the slow cooker, but searing adds a browned, savory layer that makes the finished dish more flavorful.

Can I Cook Pork Tenderloin On HIGH?

You can, but LOW is preferable because pork tenderloin is lean and can become dry if overcooked. If using HIGH, start checking the temperature after roughly 1½ to 2 hours.

How Do I Know When Pork Tenderloin Is Done?

Use an instant-read thermometer in the thickest part of the meat. The USDA-recommended safe internal temperature for whole cuts of pork is 145°F (63°C), followed by a short rest.

Why Is My Pork Dry?

The most common reason is overcooking. Pork tenderloin is much leaner than pork shoulder, so it doesn’t benefit from extended slow cooking once it has reached its target temperature.

Can I Make The Sauce Thicker?

Absolutely. Strain the cooking liquid and simmer it with a cornstarch slurry until it reaches the consistency you like. Add the slurry gradually so you don’t accidentally make the sauce too thick.

Can I Use Pork Loin Instead?

Pork loin and pork tenderloin aren’t interchangeable in this recipe without adjustments. Pork loin is larger and needs a different cooking time, so use tenderloin for the cooking time given here.

Recipe Variations

Apple And Thyme

Add sliced apples and a little extra thyme to the slow cooker for a naturally sweet, autumn-inspired version.

Mushroom Pork Tenderloin

Sauté sliced mushrooms with the pork before adding everything to the slow cooker. They’ll add an earthy flavor to the sauce.

Honey Garlic

Replace the brown sugar with honey and increase the garlic slightly for a sweeter, more pronounced garlic sauce.

Creamy Sauce

After removing the pork, stir a small splash of heavy cream into the strained cooking juices and warm gently. Don’t boil vigorously once the cream is added.

Spicy Pork Tenderloin

Add a pinch of red pepper flakes or a little smoked paprika to the seasoning for gentle heat and extra depth.

Storage

Store leftover pork and sauce in an airtight container in the refrigerator for up to 3–4 days. Reheat gently in the microwave or in a covered skillet with a spoonful of sauce or broth to help prevent the pork from drying out.

You can also freeze the cooked pork with some of its sauce for up to 2–3 months. Thaw it overnight in the refrigerator before reheating.

What To Serve With Slow Cooker Pork Tenderloin

This pork is especially good with creamy mashed potatoes because they give the sauce somewhere to go, but roasted baby potatoes, buttered egg noodles, rice, or mashed sweet potatoes work just as well. For vegetables, try roasted carrots, green beans, Brussels sprouts, or a simple side salad. A warm dinner roll is also useful for catching any extra sauce left on the plate.

Don’t slice the pork immediately after taking it from the slow cooker. Giving it those few minutes to rest helps the juices settle, and you’ll get much nicer slices instead of meat that loses all its moisture onto the cutting board.

Most importantly, rely on the thermometer rather than the clock. Once the pork reaches 145°F, take it out and let it rest; that small step makes a noticeable difference with such a lean cut.

This Slow Cooker Pork Tenderloin is tender, juicy, and packed with savory flavor. It’s an easy, comforting dinner that comes together with simple ingredients and minimal effort, making it perfect for busy weeknights or a cozy family meal.

Rate

Prep Time:

15 minutes

Cook Time:

4 hours

Total Time:

4 hours 15 minutes

Servings:

Ingredients

2 pork tenderloins
about 1½–2 pounds total
2 tablespoons olive oil
1 teaspoon salt
1 teaspoon smoked paprika
1 teaspoon garlic powder
½ teaspoon onion powder
½ teaspoon dried thyme
½ teaspoon black pepper
1 cup chicken broth
⅓ cup low-sodium soy sauce
¼ cup honey
2 tablespoons Dijon mustard
3 cloves garlic, minced
1 tablespoon cornstarch
2 tablespoons cold water

Instructions

Season the pork: Pat the pork tenderloins dry with paper towels. Rub them with olive oil, then season evenly with salt, smoked paprika, garlic powder, onion powder, thyme, and black pepper.

Sear the pork: Heat a large skillet over medium-high heat. Add the seasoned tenderloins and sear for about 2 minutes per side, until nicely browned. This step is optional but adds extra flavor.

Make the sauce: In a bowl, whisk together the chicken broth, soy sauce, honey, Dijon mustard, and minced garlic.

Slow cook: Place the pork tenderloins in the slow cooker and pour the sauce over them. Cover and cook on LOW for 3–4 hours, or until the thickest part reaches 145°F (63°C).

Thicken the sauce: Transfer the pork to a cutting board and let it rest for 5–10 minutes. Pour the cooking liquid into a small saucepan. Mix the cornstarch with cold water until smooth, then whisk it into the sauce. Simmer for 2–3 minutes, until slightly thickened.

Slice and serve: Slice the pork into medallions and spoon the warm sauce over the top. Serve immediately with mashed potatoes, roasted vegetables, rice, or green beans.

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