Heat the oven to 400°F and coat a 9-by-13-inch baking dish with cooking spray.
Add the ziti, frozen meatballs, crushed tomatoes, broth, basil and salt to the dish and stir until the pasta is submerged.
Cover tightly with foil and bake for 45 minutes.
Stir and test a center noodle; if it has a hard core, add 1/4 cup hot water, cover again and bake for 5 to 10 minutes more.
Dollop ricotta across the tender pasta, scatter mozzarella over it and bake uncovered for 10 minutes.
Rest for 10 minutes, until the tomato sauce is thick enough to hold a scoop.