Heat a large frying pan or skillet over high heat.
Pat pork loin dry and brush with stone ground mustard.
Combine the seasonings in a small bowl (minced onion, onion powder, ground mustard, salt, and chili powder), then coat the pork with the seasoning.
Add pork loin to the pan or skillet and sear all sides, this should take about two minutes per side. This will seal in the flavor.
Combine minced shallot, garlic, softened butter, and ½ tbsp rosemary leaves in a food processor or blender. Purée for 10-15 seconds. Slowly incorporate the red wine, chicken broth, and balsamic vinegar. Purée 10 more seconds *For this step- you can use an immersion blender, food processor, or blender to break down the sauce.*
Add the sauce to a saucepan over medium heat and cook until it simmers.
Add the pork loin to the crock pot. Pour the sauce around the sides of the pork loin. Add remaining rosemary sprigs around the sides. Cover and cook for 7-8 hours on low or until the pork shreds easily.
Boil and drain your favorite pasta. We recommend egg noodles for this dish.
Remove rosemary sprigs from the crockpot and shred the meat.
Add noodles to a large serving bowl and top with pulled pork. Garnish with chopped parsley and Rosemary sprigs and enjoy!