3 boneless chicken breasts 1 envelope onion mushroom soup 1 cup ketchup 1/2 cup firmly packed brown sugar 1/4 cup apple cider vinegar 1 chopped onion( if you want ) hamburger rolls ( sliders )

Combine ketchup, brown sugar, vinegar, and packet mix thoroughly . Place a little of the mixture on the bottom of a slow cooker. Then put the chicken breasts on top of the liquid. Put the onions on the top of the meat. Pour mixture over chicken and onions. Cover and cook slowly on low for 3 hours or 2 hours on high. When done, take the chicken out of the slow cooker and using 2 forks pull apart the meat ( shred it ). Put the shredded meat back into the slow cooker and mix thoroughly with the sauce,then serve on slider buns.