Shape dough into 6 flat logs about 2 inches wide. Press raw sugar into tops of logs, if desired. Bake in a preheated 350-degree oven until logs are lightly browned outside but still soft inside, about 20 minutes. Remove from oven and let cool for 20 minutes. Reduce oven temperature to 325 degrees.
Place slices flat side down on cookie sheets.
Bake for 10 minutes. Turn slices over and continue baking until lightly browned all over, about 5 to 10 more minutes. Cool on a wire rack. Store in a tightly sealed container up to 1 month. Makes about 72.