DO-AHEAD TIP: Prepare pasta in time for dinner.
Prepare pasta according to package directions, drain.
Meanwhile, in a large skillet over medium-high heat, cook and crumble sausage meat for 10 minutes or until cooked through; drain off excess fat.
Reduce skillet heat to medium and add remaining ingredients, whisking until cream cheese is fully blended into the sauce; heat through. Serve over hot pasta.