For a couple of years now, one of my favorite Flushing snacks has been the stuffed bǐng from 天津餡餅 (Tianjin Xian Bing) at the Golden Shopping Mall. The stall is not downstairs in the "food court", but up at street level, with a window that opens out on Main St. The energetic proprietor definitely seems to know what he's doing - he's opened another stall downstairs that offers a wide variety of Tianjin-style dumplings and cold prepared dishes, and I must say, they all look delicious.
Xiàn bǐng (餡餅) is essentially a pancake that has been stuffed with minced meat, then cooked on a griddle. In addition to the three types of xiàn bǐng - beef, pork, and lamb - they have other snacks, such as scallion pancakes, but I tend to get there late enough in the day that things are rather picked over, so I don't quite recall just what else they make.
(I THINK the yellow thing in the bottom right corner is stuffed with chicken, which would make it a first cousin to the Portuguese salgado pastry coxa de galinha, a kind of drumstick-shaped empanada.)
I can attest, though, that all three varieties of xiàn bǐng are delicious, but only because last night I was finally able to snag a lamb bǐng (yáng ròu xiàn bǐng - 羊肉餡餅). This seems to be the most popular kind, since literally EVERY time I have asked for one in the past (which is every single visit), they were sold out. It's pretty great, though the pork and beef are hardly less great.
The filling is delicately-seasoned minced meat, with just a bit of minced carrot and scallion. A small meal for two bucks.
天津餡餅 (Tianjin Xian Bing)
41-28 Main St., Flushing 11355
(7 train to Flushing-Main St., then 3 blocks south on Main)