To make the dough: Place the flour on a wooden work surface, make a well in the top.
Cut the butter into ¼-inch pieces and place in the center of the well with the yolks, ½ teaspoon salt, and a teaspoon of ice water.
Mix well with the tips of your fingers to form a lumpy mass
Bring together as a dough and knead for 4-5 minutes.
Wrap in plastic and set aside. (it is very probable that depending on the size of your bowl you may need to double the dough recipe) - We used a
Preheat oven to 375-degrees F (190 C).
Roll out dough to a large circle ¼-inch thick.
Butter the metal bowl and dust thickly with the toasted bread crumbs.
Line the buttered dish completely with the sheet of dough, with a 1 ½-inch edge overhang.
Boil 6 quarts (6000ml) of water in a large pasta pot, then add 2 Tablespoons of salt.
Cook the rigatoni in the boiling water, 3 minutes less than the package instructions state.
Drain and refresh under cold running water, or an ice bath, until cold, 2-3 minutes.
Toss with olive oil, and set aside
Mix half of the cooked rigatoni/ziti with 2 ½ cups tomato sauce and ½ cup of Parmiagiano, and set aside.
Mix the remaining cooked rigatoni with half of the Béchamel sauce, ¼ cup of Parmesan cheese, and nutmeg.
Place this béchamel sauced rigatoni/ziti into the bowl, and press lightly.
Place ⅓ this tomato sauce rigatoni into the bowl and press lightly.
Sprinkle with some of the grated Parmesan cheese and mozzarella cheese.
Arrange the meatballs on top in an even layer, and press down again.
Sprinkle with more Parmesan cheese and mozzarella cheese.
Spread the tomato sauced pasta over the meatballs and press down gently. Make sure to press down between each layer to remove the air.
Add a layer of sliced cooked Italian sausage and if you wish cooked eggs and repeat with a final layer of rigatoni with tomato sauce.
Fold the extra dough over the whole thing, and press gently to seal.
Cover the open top with foil and bake for about 2 hours.
Remove from the oven, remove the foil, and invert onto a large serving platter, without removing the bowl.
Allow to rest at LEAST 30 minutes, then carefully loosen the pasta around the sides with a knife and knock with your knuckles to release the bowl. The longer rest time the better as it allows the
cheese to bind the timpano for a clean and neat slice.
Serve immediately with the remaining shredded Parmesan cheese on the side, cutting the timpano into wedges to serve. Timpano is great dish for a crowd with a side salad. Open a bottle of sparkling grape juice for the kids and a glass of red or bubbly for the adults and have your self a Happy Holiday.