Christophe Besnard

In U.S. first, French phenom spreads its bread to LI

By GREGORY ZELLER // If you’re still clinging to those New Year’s weight-loss resolutions, better stay out of Great Neck. Marie Blachère (bring your French dictionary, the U.S. website is still under construction), a wildly popular French bakery boasting 500 locations throughout its home country, is warming up its first U.S. location: a two-story, 25,000-square-foot eat-in market on Middle Neck Road in the Nassau County village. Set to open this month, the new eatery essentially…