Roll out a portion of cookie dough and use knife to cut a 3 x 5 1/2" base cookie for each treat. Bake and cool. To create girl, boy and tree cookies, fill cavities with dough, bake and cool following pan directions.
Decorate cookies with royal icing. For tree, use tip 3 and brown icing to pipe zigzag trunk. Use tip 16 and green icing to pipe zigzag branches. Sprinkle with nonpareils. Decorate girl and boy with tip 3. For girl, pipe in white dress, copper head and hands; pat smooth with finger dipped in cornstarch. Add zigzag cuffs, collar and dot hem in white. Outline and pipe jumper in green, shoes in black; add zigzag and dot trim in red. Outline hair in brown; pipe in bows and dot knot in red. For boy, pipe in white shirt, brown pants, copper head and hands and black shoes. Add outline straps in green, dot buttons in red and pull-out hair in yellow. For girl and boy, add dot eyes and string mouth in black, dot nose in copper.
With spatula, ice base smooth in white, sprinkle with Cake Sparkles. Attach girl, tree and boy.
Combine Red-Red with Christmas Red for red shown. Combine Brown with Red-Red for brown shown.