Place frozen chicken, butter and seasoning into crock pot.
Mix together soups and pour over chicken.
Cover and cook on low for 6 hours or until chicken is tender.
Shred chicken in the pot and add in frozen vegetables
Mix together Bisquick milk and sour cream
Drop dumpling by tablespoon on top of chicken mixture
Cover and cook on high for 1 - 1 1/2 hours until dumpling is cooked through.
Notes
Once you have added the dumplings try not to lift the lid too often as that will release the steam and the steam is what makes them light and fluffy.
Chicken thighs will work great for this recipe, thigh meat is moister and is less likely to dry out if overcooked a bit.
If you want to freeze it, freeze the cooked mixture before adding the dumplings. Reheat in the slow cooker when ready to serve and then add the dumplings. Just be sure chicken mixture is hot before adding the dumplings or they won't cook properly.