Weeknight hero alert: you want a dinner that looks like you tried but tastes like you hired help. But here’s the catch! you also want something that practically cooks itself.
Slow cooker to the rescue with a peppercorn cranberry pork tenderloin that sings holiday vibes any night of the week. This recipe is cozy, a little fancy, and so forgiving it forgives you for forgetting to defrost the salad.
Contents
Equipment: Must-haves
- slow cooker
- skillet
- knife
- cutting board
- measuring spoon
- measuring cup
- tongs
- small bowl
- meat thermometer

Equipment: Nice-to-haves
- silicone spatula
- whisk
- strainer
- serving platter
- kitchen twine

Ingredients
- 1 pork tenderloin (about 1 to 1 1/2 lb)
- 1 small onion, diced
- 2 clove garlic, minced
- 1 cup cranberry sauce
- 2 tablespoon brown sugar
- 1 tablespoon Dijon mustard
- 1 tablespoon balsamic vinegar
- 1 tablespoon soy sauce
- 1/2 cup chicken broth
- 1 tablespoon black peppercorn, coarsely crushed
- 1/2 teaspoon salt
- 1 sprig fresh rosemary, chopped
- 1 sprig fresh thyme, chopped
- 1 tablespoon olive oil
- 1 tablespoon cornstarch
- 1 tablespoon water

Instructions
- Pat the pork tenderloin dry and season it with salt and some of the crushed black peppercorn like you mean it.
- Heat the skillet over medium-high heat and add the olive oil until it shimmers.
- Sear the pork on all sides until it develops a golden crust to lock in the juices and make your kitchen smell amazing.
- Transfer the seared pork to the slow cooker and set it aside like a VIP guest.
- Add the diced onion to the skillet and sauté until it softens and starts to brown.
- Toss the minced garlic into the skillet and cook until fragrant for just a beat longer—don’t let it sulk and burn.
- Stir the cranberry sauce, brown sugar, Dijon mustard, balsamic vinegar, soy sauce, chicken broth, remaining crushed peppercorn, chopped rosemary, and chopped thyme into the skillet.
- Bring the sauce to a gentle simmer and scrape up the browned bits from the bottom of the skillet for maximum flavor.
- Make a cornstarch slurry in the small bowl by whisking the cornstarch and water together until smooth.
- Stir a little of the hot skillet sauce into the slurry to temper it, then return the mixture to the skillet and stir until the sauce thickens slightly.
- Pour the warm peppercorn cranberry sauce over the pork in the slow cooker, coating it like a warm blanket.
- Cover and cook on low until the pork is tender and the internal temperature reads at the safe mark on the meat thermometer.
- When the pork is done, transfer it to the cutting board and tent it to rest so the juices settle where they belong.
- If the sauce needs one last moment of glory, simmer it in the skillet for a quick reduction until it reaches the texture you love.
- Slice the pork into medallions, arrange on the serving platter, and spoon the glossy peppercorn cranberry sauce over the top.
- Serve with something that can soak up sauce—mashed potato, roasted vegetable, or a buttery roll—and prepare for applause (and requests for the recipe).

Good to Know
Tip: Searing is optional but highly recommended for flavor and texture. It adds a caramelized note that the slow cooker can’t replicate.
Make-ahead: You can prepare the sauce a day in advance and refrigerate it. Reheat gently and pour over the pork before the slow cooking step.
Variation: Swap the chicken broth for apple cider for a fruitier vibe. Add a pinch of cayenne if you like a sly kick.
Serving suggestion: Slice the pork into medallions and serve over mashed potato or wild rice with a green vegetable for color and crunch. Storage: Refrigerate leftovers in an airtight container for up to three days.
Reheat gently in a skillet or microwave to avoid drying. That’s why this recipe is great for entertaining and busy nights—minimal fuss, maximum flavor, and a sauce that doubles as a mood lifter.