Preheat oven to 350, place oven racks on levels 2 & 4.
Mix flour, ginger, cinnamon, baking soda, nutmeg, and salt in a medium bowl.
Beat butter, and brown sugar in a large bowl. Use an electric mixer on medium-low until fluffy.
Add molasses, egg, and vanilla to the brown sugar and butter. Beat well.
Gradually beat in flour mixture on low.
Press dough into a ball. Wrap in plastic wrap and place it in a freezer for 10-15 min.
Shape into 1-inch balls, and roll in granulated sugar.
Place 2 inches apart on a parchment paper lined baking sheet.
Bake for 8-10 min once the cookies are brown, press white chocolate chips into them.
Move baking sheet to the wire rack to cool