Mount Pleasant Dining
There have been a few threads on this lately, which you might want to have a peek at. Closeness to subway depends on your ability to walk from Yonge.
Lai Toh Heen - dim sum in the evenings, very sexy bar.
Zee Grill - oyster bar, restaurant, nice ambience.
Cambalache - tapas. I haven't been personally, so you might want to check other posts.
If you stick to Yonge, Centro has a tapas/sushi menu for the jazz bar downstairs.