Slow Cooker 4th of July Chuck Roast Barbecue Sandwiches

Place roast in a 3 1/2 or 4 quart electric slow cooker; add onion.

Combine cola and next 7 ingredients; cover and chill 1 cup sauce.

Pour remaining sauce over raost.

Cover with lid; cook on High for 1 hour.

Reduce heat to Low; cook 8 hours or until roast is very tender.

If time doesn't permit, you can omit cooking it on High for 1 hour.

Just add two hours to the Low cooking time.

Remove roast with chopped onion from cooker using a slotted spoon and shred meat with 2 forks.

Combine reserved sauce, ketchup and butter in a saucepan; cook over medium heat, stirring constantly, until thoroughly heated.

Pour sauce over shredded meat, stirring gently.

Spoon meat mixture on buns.