HEAT 1 Tbsp. dressing in large skillet on medium-high heat. Add sausage and onions; cook 10 min. or until sausage is evenly browned, stirring occasionally. Add artichokes, pepper and remaining dressing; mix well. Bring to boil; simmer on low heat 7 to 10 min. or until sausage is done, stirring frequently. Meanwhile, cook spaghetti as directed on package, omitting salt.
ADD shrimp, tomatoes and broth to sausage mixture; stir. Cover; simmer 5 to 8 min. or until shrimp turn pink and vegetables are heated through.
DRAIN spaghetti. Add to sausage mixture; toss to evenly coat. Top with cheese and parsley.