Rub bottom and sides of slow cooker with oil or spray with non-stick cooking spray.
In a medium bowl, whisk together BBQ sauce, apple cider vinegar, chicken broth, brown sugar, prepared mustard and dried spices.
Place pork tenderloins in the slow cooker. Pour liquid mixture over tenderloin. Cover and cook on LOW for 4-6 hours or until pork tenderloin easily shreds.
Remove pork tenderloin from slow cooker. Shred pork tenderloin with two forks or cut into smaller pieces. Reduce heat to warm and add shredded pork back to the slow cooker. Or place shredded pork in a serving bowl and add 1-2 cups cooking liquid to it. Stir in additional BBQ sauce to taste.
Notes
I used Sweet Baby Ray's Original BBQ Sauce. Be sure you like the flavor of the BBQ sauce you use! I recommend using filtered Apple Cider Vinegar. I found that the unfiltered ACV results in a stronger vinegar flavor than desired.Alternate serving instructions: Place shredded pork in a serving bowl and add one to two cups of liquid mixture from crock-pot to pork. Stir in additional BBQ sauce to taste.