French Onion Lamb au Jus

Combine all ingredients in a slow cooker. Cook 8 to 10 hours on low. Remove roast and let set 20 minutes before carving. Slice thin. Make sandwiches using french rolls or large croissants, sliced and buttered with slices of Swiss Cheese. Dip in bowls of the onion soup broth. Also can be made into a complete dinner by adding vegetables to the broth.