Bobby would have to cook, but would need the boys' help getting things out of cabinets and stuff. Otherwise you'd end up with something like this:
Cas: Something's burning, Dean.
Dean: Oh crap! The turkey! *runs into kitchen with Cas following*
Sam: That's not edible now.
Dean: Really, Sam? I know that.
Sam: Should have known you'd mess it up.
Dean: Shut up, b*t*h!
Sam: Jerk!
*Bobby enters kitchen*
Bobby: What happened?
Sam: Dean burned the turkey.
Bobby: You idgit! :lol:
Question: Do you think if Sam ingested some angel blood (would have to be from a full angel like Anna, Zach, Gabe, etc since Cas has lost some of his powers) that it would counteract the demon blood?