This slow-cooker method transforms a 1 lb pork tenderloin into a tender, moist centerpiece with minimal effort.
I developed this approach to ensure the lean cut stays juicy throughout the long cooking process. The key is a flavorful liquid base and precise timing to prevent drying out.
What emerges after 4-6 hours on low is meat so tender it falls apart at the touch of a fork, infused with the aromatics of your choosing.
Serve with roasted vegetables or mashed potatoes to soak up the savory juices. Here’s how to achieve perfect results every time.
Ingredients for 1 Lb Pork Tenderloin Crock Pot
Fourteen ingredients deliver a slow-cooked masterpiece with minimal hands-on time required.
| Ingredient | Amount | Notes |
|---|---|---|
| Pork Tenderloin 🥩 | 1 lb | Trimmed of excess fat |
| Chicken Broth 🍲 | 1 cup | Low-sodium preferred |
| Soy Sauce 🫒 | ¼ cup | For umami depth |
| Apple Cider Vinegar 🍏 | 2 tbsp | Balances richness |
| Brown Sugar 🍚 | 2 tbsp | Light or dark variety |
| Garlic Cloves 🧄 | 4 cloves | Minced for even distribution |
| Yellow Onion 🧅 | 1 whole | Thinly sliced |
| Dried Thyme 🌿 | 1 tsp | Crushed between fingers |
| Dried Rosemary 🌿 | 1 tsp | Crushed for potency |
| Black Pepper 🌶️ | 1 tsp | Freshly ground preferred |
| Kosher Salt 🧂 | 1 tsp | Diamond Crystal brand recommended |
| Olive Oil 🫒 | 1 tbsp | For searing pork |
| Cornstarch 🌾 | 1 tbsp | For thickening juices |
| Water 💧 | 2 tbsp | To dissolve cornstarch |
The pork tenderloin is the foundation, so select a well-marbled piece from a reputable butcher or Whole Foods. Trim visible fat to prevent greasiness in the finished dish. Chicken broth forms the flavor base—low-sodium varieties allow better control over seasoning. Soy sauce adds depth, but tamari works as a gluten-free alternative.
No apple cider vinegar? White wine vinegar or lemon juice at equal amounts provides similar acidity. Brown sugar can be swapped for honey or maple syrup. Fresh herbs can replace dried at three times the quantity. The cornstarch slurry is optional but recommended for a glossy, restaurant-quality sauce.
The cooked pork keeps refrigerated for 3-4 days or frozen for 2-3 months. Store in airtight containers with some of the cooking liquid to maintain moisture. Reheat gently to preserve the tender, moist texture.
Why You’ll Love This Recipe
- Set and Forget: I toss everything in the crock pot before work and come home to a ready meal.
- Sweet and Tangy: The brown sugar and apple cider vinegar create this ridiculous balance I can’t get enough of.
- Feeds the Busy: I meal prep this on Sunday and it works for lunches, dinners, even tossed in tacos.
- Budget Hero: A pound of pork tenderloin stretches far, and the pantry staples keep costs low.
Step-by-Step Instructions for 1 Lb Pork Tenderloin Crock Pot
This method ensures tender, flavorful results with minimal hands-on time and maximum taste.
Step 1: Sear the Pork Tenderloin
Pat the 1 lb Pork Tenderloin dry with paper towels to ensure a good sear. Season all sides evenly with 1 tsp Kosher Salt and 1 tsp Black Pepper. Heat 1 tbsp Olive Oil in a large skillet over medium-high heat until shimmering.
Add the pork tenderloin and sear for 2-3 minutes per side until uniformly golden brown. This step develops a flavorful crust and prevents the meat from looking pale after cooking. Transfer the seared pork to your slow cooker.
Step 2: Build the Flavor Base
In the slow cooker, add the thinly sliced 1 whole Yellow Onion, minced 4 cloves Garlic Cloves, 1 cup Chicken Broth, 0.25 cup Soy Sauce, 2 tbsp Apple Cider Vinegar, and 2 tbsp Brown Sugar.
Sprinkle in 1 tsp Dried Thyme and 1 tsp Dried Rosemary, crushing the herbs between your fingers to release their aromatic oils. Stir to combine all ingredients, ensuring the pork is mostly submerged in the liquid.
Step 3: Slow Cook to Perfection
Cover and cook on low heat for 6-7 hours or on high heat for 3-4 hours. The tenderloin is done when it reaches an internal temperature of 145°F and is fork-tender.
Avoid opening the lid unnecessarily during cooking, as this releases heat and extends the cooking time. The pork should pull apart easily with a fork when fully cooked.
Step 4: Thicken the Sauce and Finish
Carefully remove the pork from the slow cooker and set it aside on a cutting board. In a small bowl, whisk together 1 tbsp Cornstarch and 2 tbsp Water until smooth. Stir this slurry into the cooking liquid in the slow cooker.
Replace the lid and cook on high heat for an additional 10-15 minutes, stirring occasionally, until the sauce thickens to a gravy-like consistency. Slice the pork and serve it smothered in the rich, flavorful sauce.
Pro Tips For Making 1 Lb Pork Tenderloin Crock Pot
- Sear First: I learned this the hard way—searing the pork tenderloin in a hot pan for 2-3 minutes per side before it hits the crock pot locks in juices and adds a depth of flavor the slow cooker alone can’t.
- Trim the Silver Skin: That tough, silvery membrane on the tenderloin won’t soften no matter how long it cooks, so take 30 seconds to trim it off with a sharp knife before adding the pork to the pot.
- Don’t Overcook: Pork tenderloin turns dry fast, so pull it at 145°F internal temp—about 2-3 hours on low in the crock pot—and let it rest 10 minutes before slicing.
- Deglaze the Pan: After searing, pour a splash of the chicken broth into the hot pan and scrape up those browned bits, then add it all to the crock pot—free flavor that’s too good to waste.
Storing and Reheating This Dish
Refrigerator Storage
Let your pork cool for no more than 2 hours before transferring to airtight containers. Store at 40°F or below for up to 3-4 days. The flavors will deepen overnight as the meat absorbs more of the cooking liquid. ❄️
Freezer Storage
For longer storage, freeze in heavy-duty freezer bags with some cooking juices for up to 2-3 months. I recommend quart-size bags for individual portions. Squeeze out excess air to prevent freezer burn and maintain quality.
Stovetop Reheating
This is my preferred method for maintaining texture. Warm in a saucepan over medium-low heat with a splash of water or broth. Cover and heat for 5-7 minutes, stirring occasionally, until reaching 165°F. 🔥
Microwave Reheating
For quick meals, place portions in a microwave-safe dish with a damp paper towel. Heat on 50% power for 2-3 minutes, stir, then continue in 30-second bursts until hot. Add a spoonful of reserved sauce to keep it moist.
Oven Reheating
Preheat oven to 300°F and place pork with sauce in an oven-safe dish. Cover with foil and heat for 15-20 minutes. This method works best for larger portions and preserves the original texture wonderfully.
Nutrition Facts
Frequently Asked Questions
Should I sear the pork first?
Yes, searing locks in flavor and creates a beautiful crust. Heat 1 tbsp olive oil in a skillet over medium-high heat and brown the pork for 2-3 minutes per side before transferring to the slow cooker.
Can I cook it for longer than 7 hours?
No, pork tenderloin can become dry if overcooked. Stick to 6-7 hours on low or 3-4 hours on high. The meat should reach 145°F internally and be fork-tender when done.
What if my sauce is too thin?
Mix 1 tbsp cornstarch with 2 tbsp water and stir into the slow cooker. Cook on high for 10-15 minutes until thickened. This creates a glossy, restaurant-quality gravy.
Can I use a larger tenderloin?
Yes, but adjust cooking time. For a 2 lb tenderloin, increase to 8-9 hours on low or 4-5 hours on high. Always check internal temperature to ensure doneness.
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