Heat oil in large skillet on medium-high heat. Add next 4 ingredients; cook and stir 3 min. or until onions are crisp-tender. Stir in next 4 ingredients; cook 2 min., stirring frequently and mashing lightly with back of spoon. Remove from heat. Stir in coriander 6and 2 Tbsp. dressing. Refrigerate 15 min.