Craving a cozy dinner that practically cooks itself while you do literally anything else? This Crock Pot mushroom pork tenderloin with savory herbs is the answer — minimal babysitting, maximum applause.
You get tender pork tenderloin, earthy mushroom and a silky herb sauce that makes weeknight cooking look like show-off cooking. That’s why this recipe is perfect when you want comfort food without the culinary drama — but here’s the catch!
It tastes like you slaved for hours (you didn’t).
Contents
Equipment: Must-haves
- Slow cooker (crock pot) — the star of the show
- Cutting board — for tidy chopping (and dignity)
- Chef’s knife — sharp is safe and fast
- Measuring spoons — for balance, not guesswork
- Tongs — for flipping and handling the tenderloin
- Meat thermometer — because no one likes undercooked pork

Equipment: Nice-to-haves
- Skillet (heavy-bottomed) — for a quick sear that adds flavor
- Kitchen twine — to keep the tenderloin compact and pretty
- Wire rack — for resting the meat and avoiding sweaty skin
- Wooden spoon — for stirring the sauce and looking rustic

Ingredients
- 1 pork tenderloin (about 1 lb), trimmed
- 8 oz mushroom, sliced (cremini or button work great)
- 1 small onion, thinly sliced
- 2 clove garlic, minced
- 1 tablespoon olive oil
- 1 cup low-sodium chicken broth
- 2 tablespoon soy sauce
- 1 tablespoon Dijon mustard
- 1 tablespoon Worcestershire sauce
- 1 teaspoon dried thyme
- 1 teaspoon dried rosemary, crushed
- 1 bay leaf
- 1 tablespoon cornstarch
- 2 tablespoon cold water
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1 tablespoon butter (for finishing the sauce)
- 1 tablespoon fresh parsley, chopped (for garnish)
- 1 sprig fresh rosemary (for garnish)

Instructions
- Trim any silver skin from the pork tenderloin and tie it gently with kitchen twine to keep a uniform shape for even cooking.
- Season the pork all over with salt and pepper and a sprinkle of dried thyme and rosemary, pressing the herbs into the meat.
- Heat the skillet over medium-high heat with the olive oil until it shimmers and then sear the pork on all sides until browned to build flavor.
- Transfer the seared pork to the cutting board and let it rest briefly while you prepare the crock pot and vegetables.
- Add the sliced mushroom and onion to the hot skillet and cook until they begin to brown and release their juices, stirring with the wooden spoon.
- Stir the minced garlic into the mushroom and onion mixture for a few seconds until fragrant, then deglaze the skillet with a splash of chicken broth, scraping up any browned bits.
- Place the mushroom and onion mixture into the bottom of the slow cooker to form a flavorful bed for the pork.
- Nestle the tied pork tenderloin on top of the mushrooms and add the bay leaf to the crock pot.
- In a small bowl, whisk together the remaining chicken broth, soy sauce, Dijon mustard and Worcestershire sauce with the dried herbs, then pour the mixture around the pork in the slow cooker.
- Cover and cook on low until the pork tenderloin reaches a safe internal temperature and is tender, checking with the meat thermometer inserted into the center.
- When the pork is cooked, use the tongs to transfer it to the wire rack to rest while you finish the sauce in the crock pot.
- Mix the cornstarch and cold water to make a smooth slurry and stir it into the cooking liquid in the crock pot to thicken the sauce, then use the wooden spoon to combine thoroughly.
- Spoon a ladle of the hot sauce into the skillet and warm it gently, adding the butter and stirring until the sauce is glossy and smooth.
- Slice the rested pork tenderloin into medallions and arrange on a serving platter with the mushroom sauce spooned over the top.
- Garnish with chopped fresh parsley and a sprig of fresh rosemary for a pop of color and fragrant finish.
- Serve immediately with your favorite side and enjoy the stunned silence as everyone takes that first, reverent bite.
What Else You Should Know
Tip: Use a meat thermometer to hit the perfect doneness; the safe and juicy target is 145°F with a short rest. Tip: Searing the pork first may feel like an extra step, but it adds deep maillard flavor that transforms the sauce — so don’t skip the skillet if you can help it.
Variation: Swap the chicken broth for white wine plus extra broth for a brighter sauce, or use balsamic vinegar for a slightly sweet tang. Variation: If you’re short on time, skip the sear and cook on high for a faster finish, but the texture and flavor will be a touch different.
Serving suggestion: This tenderloin pairs beautifully with mashed potato, creamy polenta or buttered egg noodle — all excellent mops for that savory herb sauce. Make-ahead: You can prepare the mushroom mixture a day ahead and keep it refrigerated; assemble and slow cook when you’re ready.
Leftovers: Slice cold and use in sandwiches or reheat gently with extra broth; pork tenderloin loves a second life. Final bit of wisdom: Keep your paragraphs short and your jokes shorter; dinner should be cozy, not complicated.
Bon appétit — and yes, you just made dinner look fancy without breaking a sweat.