COOK pasta as directed on package, omitting salt.
MEANWHILE, heat dressing in large skillet on medium heat. Add shrimp; cook and stir 2 to 3 min. or until shrimp turn pink, adding garlic for the last minute. Remove shrimp with slotted spoon, reserving liquid in skillet; set shrimp aside. Add cream cheese and broth to skillet; cook 3 to 5 min or until cream cheese is completely melted and mixture is well blended, stirring frequently. Stir in shrimp and 3 Tbsp. Parmesan.
DRAIN pasta. Add to ingredients in skillet; toss to coat. Transfer to platter; sprinkle with remaining Parmesan and parsley.