He laughed, and it was very much a pleased, happy one in spite of their current situations--though Stefan was more worried for his friend than himself, because he couldn't trust a vampire who chose to go by Spike. And apparently Vlad didn't exactly have a high opinion of him.
"You can come over for my cooking when you want--when your master lets you," he added. "I've been eating. Or drinking. Still on blood bags... I'm learning."