Cream butter and brown sugar until smooth.
Add the egg and molasses, mix until well combined.
Whisk flour, spices, baking soda, and salt in a separate bowl.
Add dry ingredients to the wet mixture gradually.
Form dough into a disc, wrap, and chill for 1 hour.
Roll dough to ¼-inch thickness. Cut shapes as desired.
Bake at 350°F for 8–10 minutes. Edges should be set, centers soft.
Cool fully before decorating.
