10 tbsp unsalted butter â cold, cut into small cubes
1 tsp lemon zest â finely grated
0.5 tsp fine salt
2 large eggs â lightly beaten
1 ounces dried porcini mushrooms â soaked 20 minutes in hot water, chopped; soaking liquid reserved and strained
2 tbsp olive oil
2 tbsp unsalted butter
1 medium onion â finely chopped
1 small carrot â finely chopped
1 small celery stalk â finely chopped
12 ounces ground veal
6 ounces chicken livers â trimmed and finely chopped
8 ounces cremini mushrooms â finely chopped
0.5 cup dry white wine
1 cup chicken stock
1 leaf bay leaf
1.5 tbsp kosher salt
0.5 tsp black pepper â freshly ground
4 tbsp unsalted butter
4 tbsp all-purpose flour
3 cups whole milk â warmed
0.25 tsp ground nutmeg
12 ounces maccheroni (ziti or maccheroncini) â if long, broken into 5 cm/2-inch pieces
1 cup Parmigiano Reggiano â finely grated
1 large egg â beaten (egg wash)
1 tbsp water â for egg wash
Instructions
Make the pastry: In a large bowl, whisk 2.5 cups flour, the sugar, fine salt, and lemon zest. Cut in 10 tbsp cold butter until the mixture resembles coarse crumbs. Add the 2 beaten eggs and mix just until the dough comes together. Divide 2/3 and 1/3, flatten into disks, wrap, and chill 45â60 minutes.
Soak the porcini in 1 cup hot water for 20 minutes. Strain through a fine sieve or coffee filter to remove grit; reserve the liquid. Chop the softened porcini.
Increase heat to medium-high. Add the ground veal and cook, breaking it up, until browned, 5â7 minutes. Stir in the chopped chicken livers and cook until just colored, 3â4 minutes. Add the cremini mushrooms and cook until their moisture evaporates, 5â7 minutes.
Deglaze with the white wine and simmer until nearly dry, 2â3 minutes. Stir in the chopped porcini, 1/2 cup reserved porcini liquid, the chicken stock, and bay leaf. Simmer gently, uncovered, until thick and spoonable, 20â25 minutes. Season with 1 tsp of the kosher salt and the black pepper; discard the bay leaf. Keep warm.
Heat the oven to 375°F/190°C. On a lightly floured surface, roll the larger pastry disk to a 14-inch round. Line a 9-inch (23 cm) springform pan at least 3 inches (7â8 cm) deep, letting excess hang over the rim. Chill the lined pan 15 minutes. Roll the smaller disk to an 11-inch round for the lid; keep chilled.
Cook the pasta: Bring a large pot of water to a rolling boil and add 1 tbsp of the remaining kosher salt. Cook the maccheroni until very al dente (2â3 minutes shy of package time), 6â8 minutes. Drain well.
Egg wash: Beat the remaining egg with the water and brush over the top crust.
Bake on a lower-middle rack until the pastry is deeply golden and the filling bubbles at the vents, 45â55 minutes. If the top browns too quickly, tent loosely with foil.
Rest 20â30 minutes to set. Release the springform, transfer to a platter, slice with a serrated knife, and serve warm.