Slow Cooker Mushroom Pork Tenderloin with Pan Sauce Recipe — Juicy, Hands-Off Weeknight Win

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Ready for dinner that practically cooks itself while you pretend to be productive? Slow cooker magic meets a silky pan sauce for a weeknight win.

This recipe takes a humble pork tenderloin and turns it into something that smells like you spent hours slaving over the stove. But here’s the catch!

You do a tiny bit of searing, then let the slow cooker do the heavy lifting. The result is juicy meat and a mushroom sauce so good you’ll want to lick the pan (I won’t tell).

Equipment: Must-haves

  • Slow cooker (crockpot)
  • Skillet (cast iron or heavy-bottomed)
  • Cutting board
  • Chef knife
  • Tongs
  • Meat thermometer

Equipment: Nice-to-haves

  • Fine mesh strainer
  • Small bowl (for cornstarch slurry)
  • Whisk
  • Wooden spoon
  • Serving platter

Ingredients

  • 1 pork tenderloin (about 1 lb), trimmed
  • 2 cup sliced mushroom (cremini or button), wiped clean
  • 1 small onion, thinly sliced
  • 1 clove garlic, minced
  • 1 cup chicken broth
  • 1 tablespoon soy sauce (or tamari)
  • 1 teaspoon Dijon mustard
  • 1 sprig fresh thyme
  • 1 tablespoon unsalted butter
  • 1 teaspoon cornstarch (for slurry)
  • 1 tablespoon olive oil
  • Salt, to taste
  • Black pepper, to taste
  • 1 teaspoon brown sugar (optional, for balance)
  • Fresh parsley, chopped for garnish (optional)

Instructions

  1. Pat the pork tenderloin dry and season all over with salt and black pepper.
  2. Heat the skillet with olive oil until shimmering and use tongs to sear the pork on all sides until golden for color.
  3. Transfer the seared pork into the slow cooker and nestle it in the middle.
  4. Add sliced mushroom and onion around the pork in the slow cooker.
  5. Sprinkle minced garlic over the mushroom and onion so it doesn’t hide.
  6. Pour chicken broth into the slow cooker, then add soy sauce, Dijon mustard, brown sugar if using, and tuck the sprig of thyme on top.
  7. Cover the slow cooker and cook on low until the pork is tender and reaches safe internal temperature.
  8. When the pork is nearly done, remove it from the slow cooker and place on the cutting board to rest.
  9. Strain the cooking liquid into the skillet, pressing solids lightly to release flavor, and bring it to a gentle simmer on medium heat.
  10. Whisk the cornstarch into a small bowl with cold water to make a slurry, then slowly whisk the slurry into the simmering liquid to thicken.
  11. Swirl in the butter to finish the sauce and taste for seasoning, adjusting with salt or a splash of soy if needed.
  12. Slice the pork across the grain and arrange on a serving platter.
  13. Spoon the warm mushroom pan sauce over the sliced pork and garnish with chopped parsley.
  14. Serve immediately with your favorite side and enjoy the applause (or at least satisfied silence).

What Else You Should Know

Timing: Cooking on low yields tender results. If you’re short on time, use the high setting, but watch closely so the pork doesn’t overcook.

Doneness: The target internal temperature for pork is safe and juicy — aim for the ideal range and use your meat thermometer. Let the pork rest so juices redistribute before slicing.

Pan sauce tip: If the sauce tastes too thin, mash a few mushroom pieces in the skillet to naturally thicken it. The cornstarch slurry is your trusty backup for instant silkiness.

Variations: Swap the mushroom for a single wild mushroom like shiitake for a deeper flavor or add a splash of white wine in the skillet for extra oomph. Serving: This pork loves creamy mashed potato, steamed green vegetable, or a single buttered noodle.

That’s why carbs and sauce are friends. Storage: Store leftovers in an airtight container.

Reheat gently in a skillet over low heat to keep the pork tender and the sauce glossy. Diet notes: Swap soy sauce for tamari for a gluten-free option and use vegetable broth to make it non-meat-broth friendly.

Final thought: You just made a meal that says dinner was planned, while you actually watched one episode too many. Embrace it.

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