1Bring a large pot of salted water to a boil over high heat. Add the pasta and cook until al dente, or according to package directions. Reserve 1/4 cup pasta water. Drain and rinse well under cold water; drain again and transfer to a large serving bowl.
2Add the tomatoes and pesto to the pasta and stir and toss to combine. Add a few tablespoons of pasta water to thin the pesto to evenly coat the pasta. Add the bocconcini and olive oil and toss to combine. Garnish with the basil and Parmesan and serve right away.