1heat a large pan over medium-high heat. Coat pan with cooking spray. Add celery mix and sun-dried tomatoes; cook, stirring often, five minutes or until tender. Stir in broth and next four ingredients; cover and bring to a boil over high heat.
2Place half of tomato mixture in a blender. Remove centerpiece of blender lid to allow steam to escape. Secure blender lid on blender. Place a clean towel over opening in blender lid to avoid splatters. Blend until smooth. Pour into a large bowl. Repeat procedure with remaining tomato mixture. Return soup to pan. Cook, stirring constantly, over medium-high heat for two minutes or until thoroughly heated. Garnish with parsley and sour cream, if desired. Serves four.