The menu at Martha’s Country Bakery has more than 10 types of cheesecake, as well as different sections for “large cookies” and “large chewy cookies.” In other words, whatever type of snack you’re in the mood for, it’s probably served at this big Williamsburg bakery. It’s open from 6am until midnight or later everyday, so keep it in mind for coffee and a pastry on your way to the L train or late-night dessert.