Heat oven to 375 degrees. Line 2 baking sheets with parchment paper or aluminum foil. With an electric mixer on medium high, beat with butter, brown and granulated sugars, corn syrup and vanilla for 3 minutes. Add the egg and beat until combined. In a separate bowl, whisk together the flour, salt, and baking soda. Reduce mixer speed to low and slowly add the flour mixture to the egg mixture. Add final ground ginger and flour.