In a large bowl, cream together the butter and brown sugar with a hand mixer or electric mixer on medium speed until light and fluffy.
Mix in molasses and the egg until well incorporated.
Add the cinnamon, nutmeg, ginger, salt, and baking soda to the mixing bowl and mix well.
Gradually add in the flour mixture on low speed, just until combined.
Cover and chill for at least 2 hours.
Preheat at an oven temperature of 350F.
Roll dough into 1 ½" balls and roll them in the granulated sugar until coated.
Place dough balls 2" apart on an ungreased cookie sheet pan, lined with parchment paper.
Bake cookies for 11 minutes.
Let the cookies cool for a few minutes on the cookie sheet before transferring them to a wire cooling rack to cool completely.
Store in an airtight container, cookie jar, or freezer bag.