Begin by bringing a large pot of salted water to a rolling boil. Add fusilli pasta and cook according to package instructions until al dente, usually about 8-10 minutes.

Once cooked, drain the pasta in a colander and rinse it under cold water to stop the cooking process.

In a medium-sized mixing bowl, combine mayonnaise, Dijon mustard, lemon juice, and grated Parmesan cheese. Whisk together until smooth and creamy.

In a large mixing bowl, add the cooled pasta, sun-dried tomatoes, fresh basil, and toasted pine nuts. Pour the prepared dressing over the mixture.

Gently toss all the ingredients together, ensuring the dressing coats everything evenly.

Allow the creamy Tuscan pasta salad to chill in the refrigerator for at least 15 minutes before serving.