use a slotted spoon to transfer the rigatoni into the cooked courgettes, along with a few ladlefuls of the pasta water. Keep stirring to combine, adding enough pasta water to make it silky smooth.
1 1/2 c. shredded mozzarella, divided Preheat oven to 400°. In a large pot of boiling salted water, cook rigatoni until just al dente according to package directions. Drain and rinse with cold water.