In a large saucepan, cook pasta (not mushy, ~7-9 min).
Then take a casserole dish and spread a little sauce on bottom, add 1-2 ladles of pasta, 1 ladle of sauce (just enough to lightly cover each pasta on top) sprinkle parmesan and mozzarella on top.
Repeat layers until pasta is gone and end with sauce and cheeses on top.
Put in a 350 oven for a few minutes to heat through.
Notes
We have a good friend who lived in Italy for many years. These pasta recipes are from her.