FIVE ingredients, people! Can't wait to try this one!
3 lb. beef bottom round roast
1 onion, cut into 1/2" slices
14 oz. can beef broth with onions
8 hoagie buns
8 slices of swiss or american cheese
Trim fat from meat and cut, if necessary, to fit into a 3 to 6-quart crockpot. In large skillet, brown meat on all sides, about 5-10 minutes. Place onions in crockpot and top with beef. Pour broth over all.
Cover and cook on low for 8-9 hours or on high for 4-4-1/2 hours, until meat is tender. Remove meat from slow cooker, cover and let stand 10-15 minutes. Remove onions from crockpot. Split and toast the hoagie buns.
Slice meat thinly and arrange the cooked beef and onions on the toasted buns, top with a slice of cheese. Pour cooking juices from crockpot into small heatproof bowls and serve alongside the sandwiches for dipping.