Combine first 8 ingredients in a large bowl; set aside.
Cook pasta according to package directions, omitting salt and fat. Drain the pasta in a colander over a bowl, reserving 1/2 cup cooking liquid. Add 1/2 cup cooking liquid to the ricotta mixture; stir until mixture is well-blended.
Add the pasta to the ricotta mixture; toss well. Sprinkle with Parmesan.