Crockpot Coke Barbecue Beef

Ingredients:

1 (3 to 4 lb.) roast beef

1 (16 oz.) ketchup

1 c. Coke

1 pkg. onion soup mix

Directions:

Cut up chunks of beef, put in crockpot.  Add rest of ingredients.  Cook 6 to 8 hours.  Take meat out, tear with fork, put back into crockpot.  Cook until hot.  Serve on hamburger buns.