Prepare Pork Loin: If desired, sear the pork loin in a large skillet over medium-high heat for 2-3 minutes per side until lightly browned. This step is optional but adds depth of flavor. Transfer the seared pork loin to the slow cooker.
Combine Liquids: In a medium bowl, whisk together the chicken broth, dry onion soup mix, minced garlic, and black pepper until well combined.
Cook: Pour the broth mixture over the pork loin in the slow cooker. Cover and cook on LOW for 6-8 hours, or on HIGH for 4-5 hours, or until the pork reaches an internal temperature of 145°F (63°C) and is fork-tender.
Rest & Serve: Once cooked, carefully remove the pork loin from the slow cooker and transfer it to a cutting board. Tent loosely with foil and let it rest for 10-15 minutes before slicing against the grain.
Sauce: Skim any excess fat from the cooking liquid in the slow cooker. You can serve the remaining liquid as a flavorful sauce over the sliced pork.
Notes
Chef's Tips: For a thicker sauce, you can remove the pork and then whisk 1-2 tablespoons of cornstarch slurry (cornstarch mixed with a little cold water) into the cooking liquid in the slow cooker. Cook on high for another 15-20 minutes, stirring occasionally, until thickened.Storage: Leftovers can be stored in an airtight container in the refrigerator for up to 3-4 days.Serving Suggestions: This pork loin is excellent served with mashed potatoes, roasted vegetables, or a side salad.The Secret: The 'simple secret' for tenderness is the long, slow cooking method, which breaks down connective tissues, resulting in incredibly juicy and fork-tender meat.