1Heat oven to 375°F. In medium bowl, stir cookie mix, flour, butter and egg until well blended. Roll into 1 1/4-inch balls.
2Spray cookie cutter with cooking spray; place on ungreased cookie sheet. Press dough ball evenly into cutter. Remove cutter; reshape dough if necessary. Continue making heart-shaped cookies, placing 2 inches apart on cookie sheet. Spray cookie cutter as needed with cooking spray.
3Bake 6 to 8 minutes or until light golden brown. Cool 2 minutes; remove from cookie sheet.