1. Combine frosting and sugar in large mixing bowl. Stir with wooden spoon until thoroughly blended. Chop 1/3 cup pecan halves; set aside. Cover remaining pecan halves with 1 tablespoon frosting mixture each.
2. Place chocolate chips and shortening in 2-cup glass measuring cup. Microwave at MEDIUM (50% power) for 2 minutes; stir. Microwave 1 minute at MEDIUM; stir until smooth. Dip one candy ball into chocolate mixture until completely covered. Remove with fork to cooling rack. Sprinkle top with chopped pecans. Repeat until all candy balls are covered. Allow to stand until chocolate mixture is set.