Put all ingredients but salsa in a slow cooker. Cook on high for 5 to 6 hours. Remove beef and juices from slow cooker. Reserve liquid. Shred beef and return to the slow cooker. Add salsa to beef and enough of the reserved liquid to achieve desired juiciness. Cover and cook for another 15 minutes, or until warmed.
This Slow Cooked Beef Tacos recipe is from the 101 Things To Do With A Casserole Cookbook. Download this Cookbook today.