Craving a hands-off dinner that still smells like you put in effort? Try a slow-cooked dish that practically cooks itself while you binge-watch something important.
Pork tenderloin gets cosy with mushroom and leek in a sauce that tastes like you belong in a restaurant, not a sweatpants kitchen. But here’s the catch!
You don’t need a culinary degree or a weekend of prep to pull this off. Stick a few simple steps in the slow cooker, go do literally anything else, then come back to dinner that will make everyone ask for the recipe.
Contents
Equipment: Must-haves
- Slow cooker
- Skillet (preferably cast iron)
- Cutting board
- Chef knife
- Tongs
- Measuring spoon
- Mixing bowl
Equipment: Nice-to-haves
- Meat thermometer
- Wooden spoon
- Ladle
- Splatter guard
- Serving platter
Ingredients
- 1 pork tenderloin, trimmed
- 8 oz mushroom, sliced
- 1 leek, white and light-green part sliced and rinsed
- 1 clove garlic, minced
- 1 small shallot, minced
- 1 tbsp olive oil
- 2 tbsp butter
- 1 cup chicken broth
- 1/2 cup dry white wine (or extra broth)
- 1 tbsp Dijon mustard
- 1 sprig thyme
- 1 bay leaf
- 1 tbsp cornstarch (for slurry)
- 2 tbsp cold water (for slurry)
- 1 tsp salt
- 1/2 tsp black pepper
- 1 sprig parsley, chopped (for garnish, optional)
Instructions
- Pat the pork tenderloin dry and season it with salt and pepper on all sides.
- Heat the skillet over medium-high heat and add olive oil until it shimmers.
- Sear the pork on all sides until it has a golden crust; use tongs to turn it—don’t play hot potato.
- Transfer the seared pork to the slow cooker and set it aside while you build the flavor base.
- In the same skillet, reduce heat and add butter to melt; toss in the shallot and garlic and cook until fragrant.
- Add the sliced mushroom and sliced leek to the skillet and sauté until they soften and release their juices.
- Pour in the white wine to deglaze the pan and scrape up the browned bits with a wooden spoon if you have one.
- Stir in the Dijon mustard and then add the chicken broth, thyme sprig, and bay leaf; let the liquid warm through.
- Taste and adjust a touch of salt and pepper in the skillet—this is the flavor that will hug the pork.
- Pour the entire skillet mixture over the pork in the slow cooker, making sure the pork is partly submerged but not drowned.
- Cover and cook on low until the pork is tender and an instant-read thermometer reads the right temperature, or until it easily yields to a fork.
- When the pork is done, remove it to a cutting board and let it rest while you finish the sauce—this is where patience pays off.
- Mix the cornstarch and cold water in the mixing bowl to make a smooth slurry.
- Pour some of the cooking liquid into the skillet (or a small pot) and bring it to a simmer, then whisk in the slurry until the sauce thickens to your liking.
- Slice the rested pork and arrange it on a serving platter, then spoon the mushroom and leek sauce over the top.
- Garnish with chopped parsley and serve immediately with a ladle of extra sauce on the side for saucy people.
What Else You Should Know
Timing tip: Cooking time varies by slow cooker, but plan for low-and-slow; pork tenderloin gets tender without drying out when treated kindly. If you’re short on time, cook on high until tender, but check often—this cut is lean and can go from perfect to overdone like a reality-TV elimination.
Thickening trick: If your sauce is thin, the cornstarch slurry will rescue it. Add a little at a time while simmering until you hit that silky jackpot.
Variation idea: Swap white wine for apple cider for a slightly sweet note, or add a small pinch of smoked paprika for subtle warmth. Serving suggestion: Pair with mashed potato, buttered noodle, or a heap of roasted vegetable for a cozy plate.
The sauce loves starch as much as you do. Make-ahead hack: You can sear the pork and sauté the vegetables a day ahead; refrigerate separately and finish in the slow cooker the next day.
That’s why slow cooking is basically kitchen sorcery—no wand required, just a slow cooker and good intentions.
