Enough sauce to cover the bottom of the dish with a thin layer
Half of the ziti mixture
Cubed mozzarella
Pecorino Romano
Cracked black pepper
Fresh parsley
Rest of the ziti mixture
More cubed up mozzarella
More grated Pecorino Romano
More sauce (about 2 ladle fulls) thick layer
Rest of the cubed mozzarella
Grated pecorino romano
Cracked black pepper
And fresh chopped Italian salt leaf parsley