This top-tier caterer opened its storefront carryout about two years ago, and the neighbors want them out. "They've been fattening us up," jokes the owner of the locksmith shop next door. That's no surprise. The cookies, cakes, breads, and other sweet treats ($1.15 to $6), by co-owner and White House pastry veteran Laura Schwartz, are irresistible. The standout panna cotta ($2.95), delicately infused with vanilla and topped with strawberry sauce, is enough for two. But don't skip the main-course salads and sandwiches, especially the strapping black-angus burger ($5.50) on a freshly baked onion roll--and spring for the bacon, an additional 50 cents.