Craving a comfort dinner that practically cooks itself while you pretend to be productive? Good news: this Crock Pot mushroom pork tenderloin with tarragon cream does the heavy lifting.
It sears a little, simmers a lot, and finishes with a silky herb sauce that makes everyone suddenly Very Interested in dinner. That’s why this recipe is for busy weeknights, overachievers, and anyone who likes food that tastes fancier than the effort put in.
Contents
Equipment: Must-haves
- Slow cooker (6-quart)
- Skillet (heavy-bottomed, oven-safe if possible)
- Thermometer (instant-read)
- Knife
- Cutting board
- Wooden spoon

Equipment: Nice-to-haves
- Tongs (for flipping the pork without dramatics)
- Measuring spoons
- Measuring cup
- Small bowl (for whisking cream)
- Whisk (or fork, we don’t judge)

Ingredients
- 1 pork tenderloin (about 1 to 1¼ pound)
- 1 tablespoon olive oil
- 8 ounce mushroom, sliced (cremini or button both work fine)
- 1 small shallot, minced (or half small onion if feeling rebellious)
- 2 cloves garlic, minced
- 1 cup low-sodium chicken broth
- 1 tablespoon Dijon mustard
- 1 teaspoon dried tarragon (or 1 tablespoon fresh tarragon, chopped)
- 1 teaspoon fresh thyme leaves or ¼ teaspoon dried thyme
- 1 tablespoon butter
- 1 cup heavy cream
- Salt, to taste
- Black pepper, to taste
- 1 teaspoon cornstarch (optional, for thicker sauce)
- 1 tablespoon cold water (only if using cornstarch)

Instructions
- Pat the pork tenderloin dry and season it all over with salt and pepper like you mean it.
- Heat a skillet over medium-high heat and add the olive oil until it shimmers.
- Sear the pork on all sides until nicely browned to lock in flavor and give you kitchen bragging rights.
- Transfer the seared pork to the slow cooker and tuck it in like a sleepy pig in a blanket.
- In the same skillet, reduce heat and add the butter, then sauté the mushroom until it starts to brown.
- Add the shallot and garlic to the mushrooms and cook briefly until fragrant; this little team smells amazing.
- Pour the chicken broth into the skillet and scrape up any browned bits to capture that deep flavor.
- Stir in the Dijon mustard, tarragon, and thyme into the broth mixture, then pour the whole saucy party into the slow cooker over the pork.
- Cover and cook on low or high depending on your schedule; the pork will become tender and forgiving.
- When the pork is nearly done, use the thermometer to check for doneness and make sure it reaches a safe temperature.
- Remove the pork to a cutting board to rest while you finish the sauce—resting equals juicy meat, not waiting time.
- Skim any excess fat from the cooking liquid, then pour the liquid into the skillet and bring it to a gentle simmer.
- Reduce the heat slightly and stir in the heavy cream, letting the sauce become glossy and smooth.
- If a thicker sauce is desired, whisk the cornstarch with cold water in a small bowl, then stir it into the simmering sauce until it thickens.
- Taste and adjust seasoning with salt and black pepper as needed, then slice the pork and spoon the mushroom tarragon cream over each serving.
What Else You Should Know
Timing tip: Cook on low for a more hands-off all-day meal or on high when you’re short on time; both will make the pork tender and happy. Thermometer note: Aim for the pork to reach safe internal temperature; rest it after cooking so juices redistribute and nobody gets dry pork remorse.
Variation: Swap the heavy cream for half-and-half plus a pat of butter if you want a lighter sauce, but keep the tarragon—it’s the personality. Serving suggestion: Spoon the pork and tarragon cream over mashed potato, polenta, or buttered noodle to catch every last drop.
Vegetables like roasted asparagus or green beans make a bright counterpoint. Make-ahead: The sauce keeps well in the fridge for a couple of days and actually tastes more confident the next day.
Reheat gently so the cream doesn’t sulk. Final tip: Don’t skip the quick sear.
It only takes a few minutes and transforms the dish from “slow cooker dinner” to “restaurant vibes at home.”