Preheat to 350°F. Line a baking sheet with parchment paper.
Mill the wheat berries on the lowest setting of your grain mill.
Cream together the butter and sugar.
Beat in the vanilla, egg, and molasses.
In a separate bowl, whisk together the fresh-milled flour, baking soda, salt, ginger, and cinnamon.
Add the dry ingredients to the wet ingredients and mix just until combined. Do not overmix.
Scoop dough into 1½-2inch balls. Roll in granulated sugar if using and place on the prepared baking sheet.
Bake for 9–11 minutes, until the edges are set and the centers still look soft. Mine took 10 minutes.
Let the cookies sit on the baking sheet before transferring to a wire rack. Drizzle with maple icing, if desired, once cooled.