Lunch: Ratty. Both eateries have those weirdly delicious Pumpkin & White Chocolate Chip cookies, but only the Ratty has eggplant parm.
Dinner: Ratty. Hopefully you ate enough eggplant parm at lunch to never have to eat again, but if you must, head back to the Ratty. There are only 4 nights of Vegetarian Sandwich Bar left.