Remove turkey from cooker. Remove skin from turkey breast. Cut turkey into 24 slices; place on platter and cover to keep warm. Pour juices from cooker into 4-cup microwavable measuring cup or bowl. In small bowl, mix cornstarch and cold water until smooth; stir into juices in cup. Microwave uncovered on High 3 to 5 minutes, stirring every minute, until mixture boils and thickens. Serve with turkey.