Preheat oven to 375ºF. In standing mixer, beat butter, sugar and molasses until light and fluffy, about 2 minutes. Beat in egg.
In a separate bowl, whisk together flour, baking soda, baking powder, salt and spices. With mixer speed on low, add to butter mixture and beat to combine. Chill dough for 1 hour.
Roll dough into 1-inch balls and then roll in sugar. Bake 2" apart on parchment-lined baking sheets for about 8 minutes, until golden and crinkled.