Make cookies. Prepare dough following recipe directions. Press into pan cavities filling 2/3 full. Bake and cool according to pan package directions.
Decorate cookies. Prepare royal icing following recipe directions. Tint portions red and rose; reserve some white. Use tip 3 and tinted icing to outline and fill in two hearts for each color. Pat smooth with finger dipped in cornstarch.
Use tip 3 and white icing to outline and fill in center heart and two side hearts. Pat smooth with finger dipped in cornstarch. Let dry until set.