These easy crockpot barbecue beef sandwiches are a fabulous way to use leftover roast beef, and they only use one pot with just 5 minutes prep time. The rich barbecue flavor will have your family asking for them over and over.
In a slow cooker combine all ingredients; mix well. Cover and cook on low 3-4 hours or until meat is heated through. Use a slotted spoon to serve on buns.