Heat oven to 350 degrees. Line baking sheets with parchment paper or spray lightly with cooking spray. Mix sugar, sour cream, margarine/butter, shortening, vanilla and egg in large bowl.
Stir in flour baking soda and salt. Stir in chocolate morsels. Drop by rounded tablespoonfuls about 2 inches apart. Bake 12-14 minutes or until just beginning to brown. Cool slightly on baking sheet before removing to wire racks.