2Cook the ziti in salted boiling water until just barely tender, about 1 minute under the package time. Drain well.
3In a bowl, whisk together the ricotta, 1.5 cups mozzarella, and parmesan with a pinch of salt and pepper.
4In a 9x13 baking dish, combine the hot ziti with the marinara sauce, then fold in the ricotta mixture—leave some of it in ribbons rather than fully blending.
5Top with the remaining 0.5 cup mozzarella and bake for 15 minutes until the top is golden and bubbling.
6Let rest for 5 minutes, scatter fresh basil over the top if using, and serve hot.