Preheat your oven to 375° and line a baking sheet with a silpat or parchment.
Sift the flour, baking soda, salt, cinnamon and ginger into a medium bowl and set aside.
Cream the butter and dark brown sugar on high speed until light and fluffy {about 1-2 minutes}. On medium speed beat in the egg and molasses, increase the speed to high and mix until it no longer looks curdled.
On low speed, gradually add flour mixture, stop once combined. Use a 1/4 cup scoop to measure each cookie and roll them into large balls.
Toss each cookie ball into the granulated sugar and place 4 cookies onto the prepared baking sheet spaced a few inches apart as they will spread. With dampened fingers, press down the center of each cookie.
Bake in your preheated oven for 10-12 minutes.
Remove the pan let cool for 5 minutes before removing to a wire rack. Repeat until all are baked.