Crock Pot Apple Garlic Onion Pork Tenderloin Recipe: Hands-Off Sticky-Sweet Weeknight Win

Craving a hands-off dinner that still feels like you slaved over it? Same.

This crock pot recipe turns a single pork tenderloin into a sticky, savory-sweet marvel while you do literally anything else.

It uses apple, garlic, and onion to build flavor that makes people ask if you hired a private chef. But here’s the catch!

It’s ridiculously easy and forgiving, which is why weeknight heroes everywhere love it.

Equipment: Must-haves

• Crock pot (slow cooker)
• Sharp knife
• Cutting board
• Mixing bowl
• Measuring spoons
• Tongs
• Wooden spoon
• Meat thermometer

Equipment: Nice-to-haves

• Skillet for searing (optional but tasty)
• Small bowl for thickening sauce
• Serving platter for dramatic reveal

Ingredients

• 1 pork tenderloin (about 1 to 1.5 lb)
• 1 apple, firm variety like Granny Smith, cored and sliced
• 1 medium onion, thinly sliced
• 4 cloves garlic, smashed and minced
• 1 tablespoon olive oil
• 2 tablespoons brown sugar
• 2 tablespoons apple cider vinegar
• 1 tablespoon soy sauce
• 1 teaspoon Dijon mustard
• 1 teaspoon dried thyme
• 1 teaspoon salt
• 1/2 teaspoon black pepper
• 1/2 cup chicken broth
• 1 teaspoon cornstarch (optional, for thickening)
• 1 tablespoon butter (optional, for glossy sauce finish)
• Fresh parsley, chopped (for garnish)

Instructions

1. Pat the pork tenderloin dry with paper towel and season with salt and pepper on all sides using your hands like you mean it.
2. If you choose to sear, heat a skillet with olive oil until shimmering and brown the pork quickly on all sides using tongs to get a little crust.
3. Place sliced apple and sliced onion in the bottom of the crock pot to make a cozy flavor bed for your pork.
4. Nestle the pork tenderloin on top of the apple and onion layer in the crock pot using tongs so it sits pretty.
5. In a mixing bowl whisk together garlic, brown sugar, apple cider vinegar, soy sauce, Dijon mustard, dried thyme, and chicken broth until smooth.
6. Pour the sauce mixture over the pork tenderloin and apples, spooning a little onto the top so every bite gets love.
7. Cover and cook on low until the pork reaches a safe internal temperature and is fork-tender, checking with a meat thermometer.
8. Once the pork is done, transfer it to a cutting board and tent loosely with foil to rest while you finish the sauce.
9. Using a wooden spoon, scrape the cooking juices and softened apples from the crock pot into a small saucepan or the skillet you used earlier.
10. If you want a thicker, glossy sauce, whisk cornstarch with a splash of water in a small bowl until smooth and stir it into the warm cooking juices.
11. Bring the sauce to a gentle simmer while stirring until it thickens; finish by stirring in butter for shine and extra richness if desired.
12. Slice the rested pork tenderloin against the grain into medallions using your sharp knife for maximum tenderness.
13. Arrange pork slices on a platter over the softened apples and onions and spoon the thickened garlic-apple sauce over the top.
14. Garnish with chopped parsley and serve immediately with mashed potato, roasted veg, or a simple salad for a complete meal.
15. Store leftover pork and sauce in an airtight container in the fridge for up to three days, or shred for sandwiches and tacos later.
16. Reheat gently in a skillet with a splash of broth to keep the pork juicy and the sauce lively.

What Else You Should Know

Tip: Searing the pork before slow cooking is optional, but it adds a deeper flavor and a richer-looking sauce. That’s why many cooks do it when they have an extra five minutes.

But here’s the catch! If you skip searing, the crock pot will still deliver tender, delicious pork—just take the time to rest the meat before slicing.

Variation: Swap the apple for pear if you want a milder, floral sweetness, or add a splash of bourbon for an adult twist. Serving suggestion: Spoon the apple-garlic-onion mix over mashed potato or buttered noodles to soak up every last drop.

Bread for mopping is highly recommended. Sauce rescue: If the sauce separates or seems thin, whisk a little cornstarch slurry into it and simmer until it thickens.

If it’s too tart, a pinch more brown sugar balances it out. Make-ahead note: You can assemble everything in the crock pot insert the night before and refrigerate.

Let the insert come closer to room temperature before turning the slow cooker on. Health note: Pork tenderloin is a lean cut that pairs wonderfully with fruit and aromatics for a lower-fat, high-flavor main.

Simple swaps like low-sodium broth and less sugar keep it lighter. Leftovers idea: Shred the pork and toss it into tacos with pickled onion, or layer it on toast with melted cheese for an unbeatable lunch.

Final chefy nudge: Use your meat thermometer to hit the sweet spot and avoid guesswork. Pull at the right temperature, and you’ll have tender, juicy pork every time.