Crock Pot Chicken and Dumplings

4 skinless, boneless chicken breasts
2 tbsp butter
2 cans condensed cream of chicken soup
1 onion, finely diced
2 pkg refrigerate biscuit dough

Place chicken, butter, soup and onion in a crock pot.
Fill with enough water to cover.
Cover and cook on los for 7 hours.
30 minutes before serving, tear up biscuits and place in crock pot.
Cook until the dough in no longer raw in the center.