Spray 4- to 5-quart slow cooker with cooking spray. In cooker, mix carrots, onions, broth and salt.
Cover; cook on Low heat setting 8 to 10 hours.
Pour 4 cups of the soup mixture to blender; add half each of the whipping cream, orange juice, brown sugar, gingerroot and pepper. Cover and blend until smooth; return to cooker. Blend remaining soup mixture with remaining half of ingredients; return to cooker.
Increase heat setting to High. Cover; cook 15 to 20 minutes longer or until hot. Garnish individual servings with an orange quarter and parsley.