Thaw hens overnight. Wash hens in warm water. Mix remaining ingredients together in butter. Baste hens with of mixture. Fill crockpot with water until bottom is about full.
Place hens inside crockpot.
Spread remaining mixture over hens. Turn on low. Cook for eight hours or until done. If you will be gone less than eight hours, you may turn crockpot on high. Hens will be done in four hours or so.