Preheat oven to 425 F. Bring 6 quarts water to boil and add 2 tablespoons
salt.
Cook ziti according to package instructions until al dente. Remove, drain
and refresh in cold water. Drain again and place in large mixing bowl. Add
tomato sauce, balsamella, mozzarella and grated cheese and stir to mix
well. Divide among 4 gratin dishes, sprinkle with bread crumbs and bake in
oven until bubbling and crusty on top, about 20 minutes. Remove from oven
and serve immediately.
