Decorate your ginger folks in adorable outfits made from icing and dough scraps, from the Martha Stewart Makes Cookies iPad app.
Beat butter and brown sugar with an electric mixer on high speed until fluffy, about 5 minutes. Add egg; mix well. Beat in molasses, cinnamon, ginger, allspice, baking soda, and salt. Reduce speed to low, and add flour, 1 cup at a time, mixing until incorporated.
Divide dough into quarters; shape into disks and wrap in plastic. Chill until firm, about 3 hours.
Preheat oven to 375 degrees with racks in upper and lower thirds. On a lightly floured work surface, roll out 1 disk of dough to 1/8-inch thickness. Cut out cookies, rolling out any scraps and additional disks as needed until you have about 24 people. Transfer to parchment-lined baking sheets, spacing 1 inch apart. With remaining dough, cut out additional shapes to make clothes, jewelry, and hair as desired. Dress cookies, then chill 20 minutes.
Bake cookies 2 sheets at a time, 7 minutes; rotate sheets top to bottom and front to back, and continue baking until cookies are firm when touched, 6 to 8 minutes more. Let cool on sheets 5 minutes. Transfer to wire racks; let cool completely. Decorate cookies as desired.
Well-wrapped dough can be frozen up to one month. Let soften slightly before rolling.