Ingredients:

2 pounds chuck roast
1 onion, chopped
1 (6 ounce) can tomato paste
3/4 cup water
1 (1.3 ounce) envelope sloppy joe seasoning
2 tablespoons cider vinegar

Directions:

Place the beef, onion, tomato paste, water, sloppy Joe seasoning mix and vinegar in a slow cooker. Cook on low setting for 10 hours OR on high setting for 5 hours