Preheat oven to 375°F and line baking sheets with parchment paper.
In a small bowl, mix together whole wheat pastry flour, baking soda, salt and spices.
In a large bowl, mix together butter, brown sugar and molasses until combined, then add egg. Add dry mixture and mix until combined.
Scoop cookies and roll the tops in sparkling sugar. Place 2 inches apart on prepared baking sheets and bake until edges are just set, 8-10 minutes. Let cool on baking sheets for 5 minutes, then remove to a cooling rack.