Cream butter and brown sugar until fluffy. Mix in spices, salt and pepper, then eggs and molasses. Add flour, baking soda and baking powder, mixing on low speed. Chill at least 1 hour.
Heat oven to 350 degrees. On a floured surface, roll out dough 1/8-inch thick. Cut into desired shapes. Bake 8-10 minutes on greased baking sheets until crisp but not darkened. Cool and decorate.
Please note that some ingredients and brands may not be available in every store.