Cream butter and sugar. Using a hand mixer cream together on medium speed until light and fluffy (about 3 minutes)
Add egg & molasses. Mix together until fully combined.
Mix flour and spices. Whisk flour, baking soda, nutmeg, ginger, and cinnamon together until combined.
Add dry ingredients to wet ingredients. Mix until there is no flour visible in the dough
Chill dough. Cover with plastic wrap and place in the fridge for 2 hours.
Roll into balls. Form 18-20 balls of cookie dough.
Roll in powdered sugar. Fully coat each ball of dough then place on a baking sheet lined with parchment paper, leaving 3 inches between.
Bake. 375 for 10 minutes until cookies have cracked but still look slightly underbaked.
Cool. Allow cookies to cool on a baking sheet for 10 minutes, then transfer to a cookie rack to cool fully.