Buttery Butterscotch Cut-Outs

Melt butterscotch chips in 1-quart saucepan over low heat, stirring constantly, until smooth (3 to 5 minutes). Pour mixture into large mixer bowl; add all remaining ingredients except decorator sugars and frosting. Beat at low speed, scraping bowl often, until well mixed (1 to 2 minutes). Divide dough in half. Wrap each half in plastic food wrap; flatten slightly. Refrigerate until firm (at least 1 hour). Heat oven to 375 °F (190°C). Roll out dough on lightly floured surface, one-half at a time (keeping remaining dough refrigerated), to 1/8-inch thickness. Cut with 2 1/2-inch cookie cutters. Place 1 inch apart onto ungreased cookie sheets. Sprinkle with decorator sugars, if desired. Bake for 5 to 8 minutes or until edges are lightly browned. Cool completely; decorate with frosting, if desired.