In medium microwavable bowl, microwave dark chocolate chips, whipping cream and butter uncovered on High 1 minute to 1 minute 10 seconds, stirring every 30 seconds, until melted and smooth. Spoon generous 1 teaspoonful chocolate mixture into indentation in each cookie. Top each cookie with 1 maraschino cherry. Let stand about 30 minutes or until chocolate filling is set. Store covered in refrigerator.