I have some butternut squash that I really should harvest & thought I'd give it to the hens. They have had raw pumpkin before and didn't care for it too much. (They are really spoiled when it comes to treats and food.) I was thinking of cooking it for them, so it would be a soft, warm treat. Any suggestions on preparing butternut squash for chickens? Cook it like I would for humans, minus the butter or olive oil?