Krispy Kreme Doughnuts introduces The Gingerbread Glazed Doughnut, available only on National Gingerbread House Day, Dec. 12   WINSTON-SALEM, N.C., 2017-Dec-06 — /EPR Retail News/ — Krispy Kreme Doughnuts is sweetening the season by introducing a first-time, one-day seasonal take on its iconic Original Glazed® Doughnut. The Gingerbread Glazed Doughnut is available on National Gingerbread House Day, Tuesday, Dec.…