Cream the butter and sugar in a stand mixer or bowl.
Mix in the molasses, egg, and salt.
Sift together the whole wheat flour, flour, baking soda, ginger, cinnamon, cloves, and nutmeg, then gradually mix into the dough.
Transfer the dough to a small bowl, then cover tightly with plastic wrap and refrigerate for at least 1 hour.
Preheat oven to 350 degrees. Line two baking sheets with parchment paper.
Roll the dough into 1-inch balls then lightly roll each ball in sanding sugar.
Place the balls on the baking sheets, leaving 2 inches between each ball to allow room for spreading.
Bake for 10-12 minutes until cracked on top.