Cook the Pasta: Bring a large pot of salted water to a boil. Add the pasta and cook according to the package instructions until al dente. Reserve about 1/4 cup of the pasta cooking water, then drain the pasta.

Prepare the Sauce: In a saucepan over medium heat, combine the tomato basil pasta sauce and cream cheese. Stir continuously until the cream cheese melts and the sauce becomes smooth and creamy. If the sauce is too thick, add a bit of the reserved pasta water to reach your desired consistency.

Combine and Serve: Add the drained pasta to the sauce, tossing to coat evenly. Serve hot, optionally garnished with grated Parmesan cheese and fresh basil if desired.