try also this one, it looks just what you're looking for:http://www.mangiarebene.net/cinema/m...i_timpano.html
It's likely that you had trouble finding this recipe because it's better known as "Timballo di maccheroni". If you google up this name you'll find plenty of recipes!
Generally speaking, Timballo is a dish made of pasta (often, but not always, maccheroni) seasoned with a rich meat sauce and other ingredients like meatballs, cheese and so on, contained into a pastry crust which can be either savoury or sweet. Everything is baked into a mold and unmolded before serving.
It's a festive dish coming from Southern Italy. I can't say if it was born in a definite area, but the most popular versions come from Napoli and Sicily. (BTW, another movie where a Timballo appears is "Il Gattopardo" by Luchino Visconti. The dish is also described in the original book by Giuseppe Tomasi di Lampedusa)