Cinnamon, ginger, nutmeg, and cloves—let’s name them the Beatles of vacation baking—make these gingerbread muffins downright irresistible. They star within the precise muffin and in a buttery streusel on prime. Since Christmas breakfasts is a once-a-year indulgence, the muffins are drizzled with a thick glaze identical to gingerbread cookies. Make them forward by…