Brown Butter Mushroom Crockpot Pork Tenderloin Recipe That Makes Weeknights Taste Like Gourmet

Pork and Mushroom walk into a crockpot and the result is pure comfort—no cape required. If you want tender meat and a sauce so good you’ll want to lick the spoon, this recipe is your friend.

But here’s the catch! You get gourmet vibes with almost zero babysitting.

That’s why this brown butter mushroom crockpot pork tenderloin is the weeknight hero you didn’t know you needed.

Equipment: Must-haves

• Crockpot (slow cooker)
• Skillet (preferably cast iron)
• Tongs
• Sharp knife
• Cutting board
• Meat thermometer
• Mixing bowl
• Whisk or fork
• Spoon

Equipment: Nice-to-haves

• Kitchen twine (to keep the tenderloin neat)
• Fine-mesh strainer (for spooning clarified sauce)
• Serving platter (for dramatic slicing)
• Paper towels (for patting pork dry)

Ingredients

• 1 pork tenderloin (about 1 to 1.25 lb), trimmed and tied if needed
• 1 cup mushroom, sliced (cremini or button)
• 2 tablespoon butter
• 1 clove garlic, minced
• 1 tablespoon brown sugar
• 2 tablespoon soy sauce
• 1 tablespoon Dijon mustard
• 1/4 cup chicken broth
• 2 teaspoon Worcestershire sauce
• 1 teaspoon thyme, fresh or dried
• 1 tablespoon cornstarch
• 1 tablespoon water
• Salt to taste
• Pepper to taste
• 1 teaspoon olive oil (for searing if needed)

Instructions

1. Pat the pork tenderloin dry with paper towels and season it with salt and pepper on all sides.
2. If using kitchen twine, tie the pork gently to keep a uniform shape so it cooks evenly.
3. Heat the skillet over medium-high heat and add butter until it foams and begins to brown—the aroma will be irresistible.
4. Add the pork to the skillet and sear on all sides until a golden crust forms; use tongs to rotate it like you mean it.
5. Remove the pork and set it aside on the cutting board while you brown the mushroom in the same skillet.
6. Sauté the mushroom until edges turn golden, then add the garlic and give it one quick stir to wake up the flavor.
7. Pour in a splash of chicken broth to deglaze the skillet and scrape the browned bits into the sauce—the good stuff lives there.
8. In the mixing bowl whisk together the remaining sauce ingredients: brown sugar, soy sauce, Dijon mustard, Worcestershire sauce, thyme, and the rest of the chicken broth.
9. Place the pork tenderloin into the crockpot and tuck the browned mushroom and its buttery bits around and over the pork.
10. Pour the sauce mixture over the pork and mushrooms so everything gets cozy and covered.
11. Cover the crockpot and cook on low until the pork reaches the safe internal temperature and is tender to the touch; use the meat thermometer to check doneness.
12. When the pork is done, remove it to the cutting board and let it rest so the juices redistribute—resting is non-negotiable.
13. Whisk the cornstarch with water in the mixing bowl to make a slurry, then stir the slurry into the crockpot liquid.
14. Turn the crockpot to high and let the sauce thicken for a few minutes, stirring with a spoon until glossy and saucy.
15. Slice the rested pork on a bias and spoon the brown butter mushroom sauce over each slice for dramatic deliciousness.
16. Serve immediately with mashed something or roasted something, and prepare to accept compliments you didn’t rehearse for.

Good to Know

Taste as you go when finishing the sauce and adjust salt and pepper; soy can be sneaky with salt. If you like a deeper brown butter flavor, let the butter in the skillet color a touch more before adding mushroom, but don’t burn it—charred butter is a mood killer.

For a thicker sauce, mash a little mushroom in the crockpot and stir; natural starch will help. Leftovers keep well in an airtight container for up to three days, and they make spectacular sandwiches the next day.

Variation: swap thyme for rosemary for an earthier note, or add a splash of balsamic for brightness. Serving suggestion: slice thin and serve over creamy mash or buttery polenta so the sauce can shine.

That’s why a slow cooker is magic—hands-off cooking with a restaurant-level finish. Final tip: use the meat thermometer and pull the pork at the right temperature for juicy results; guesswork is for game shows, not pork.