Instructions

Cream butter and brown sugar until light and fluffy. Beat in egg and molasses. In another bowl, whisk together flour, baking soda, salt and spices; gradually beat into creamed mixture. Divide dough in half; shape each into a disk. Wrap in plastic; refrigerate, covered, until firm enough to roll, 4 hours or overnight.
Preheat oven to 350°. On a lightly floured surface, roll each portion of dough to 1/8-in. thickness. Cut with floured 3-1/2-in. sweater-shaped cookie cutters. Place 2 in. apart on ungreased baking sheets.
Bake cookies until edges are firm, 8-10 minutes. Remove to wire racks; cool completely.
Place first five icing ingredients in a small bowl; beat on low speed just until blended. Beat on high until stiff peaks form, 4-5 minutes. Thin with cream to desired consistency. If desired, tint with food coloring.
Pipe onto cookies and decorate as desired. (Keep unused icing covered at all times with a damp cloth. If necessary, beat again on high speed to restore texture.) Let cookies stand at room temperature several hours or until frosting is dry and firm.