Beat butter and sugar until fluffy. Add egg and molasses; mix well.

In another bowl, whisk flour, baking soda, salt, and spices.

Combine dry and wet ingredients until dough forms. Wrap and chill 1 hour.

Roll chilled dough 1/4 inch thick. Cut into shapes with cookie cutters.

Bake at 350°F (175°C) for 8–10 minutes. Cool on a wire rack.

Decorate with icing once cooled.