In a slow cooker, add chicken, celery, carrots, onions, garlic, thyme and black pepper.
Mix the cream of chicken soup or cream of celery soup with water. Stir.
Cook on HIGH for 4 hours, or LOW 8 hours.
If you wish, add peas at the end. Stir.
This recipe calls for 7 biscuits. Divide the biscuits in quarters. Place the quartered biscuits in an even layer over the soup.
Add a pinch of salt and pepper to the dumplings. Cover with a lid.
Set your slow cooker on HIGH
Cook on HIGH for 45 minutes. When the dumplings become dull and glisteny, you will know they're done.
NOTE: If the slow cooker is heating up after cooking, you'll need to cook the dumplings in the slow cooker for 1.5 hours to get it back to room temperature.