Slow Cooker Shredded Beef Buns

In an effort to use my crockpot as often as possible, I stumbled upon this recipe at kraftfoods.com and decided to try it.  We however, did not want to eat these open faced and of course, no mushrooms or tomatoes on it for us. We ate this on toasted loaf bread and it was quite yummy! This one we'll definitely make again!

Ingredients:
Beef flank steak (1 lb.)
1 small onion, sliced
1 cup sliced fresh mushrooms
1 tomato, chopped
1/2 cup KRAFT Original Barbecue Sauce
2 tsp. Italian seasoning
2 sandwich buns, split

Place steak in slow cooker; top with next 3 ingredients. Pour combined barbecue sauce and seasoning over ingredients in slow cooker. Cover with lid.

Cook on LOW 8 to 10 hours (or on HIGH 5 hours). Remove steak from slow cooker; shred with fork. (Or, cut across the grain into thin strips.) Return meat to slow cooker; stir to coat with sauce.

Top each bun half with meat mixture.