II
The Method
1
Prepare the polpettine. Combine the minced meat, Parmigiano, egg, breadcrumbs, and salt in a bowl. Roll into balls no larger than a marble — this size is essential for even cooking in the bake. Fry in olive oil over moderate heat, turning, until browned on all sides and cooked through. Transfer to a plate. They are ready when they hold their shape and yield no pink when pressed.
2
Make the tomato-and-meat sauce. Sweat the onion in olive oil until soft and translucent. Add the minced meat and cook until it has lost all raw colour. Add the crushed tomatoes, season with salt, and simmer over low heat until the sauce has thickened and is no longer watery — a spoon drawn through it should leave a brief trail.
3
Prepare the ricotta mixture. Beat the ricotta with the eggs and salt in a separate bowl until smooth and uniform. This step prevents the ricotta from releasing water during the bake. The mixture should be thick enough to fall from a spoon in a slow ribbon.
4
Cook the pasta in well-salted boiling water for 3–4 minutes less than the packet time. This is where the dish lives or dies: pasta cooked to full al dente or beyond will turn to paste in the oven. Drain immediately and dress with a ladleful of sauce to prevent sticking.
5
Preheat the oven to 200°C. In a large bowl, combine the dressed pasta with the remaining sauce, the polpettine, sliced hard-boiled eggs, mozzarella, salami, ricotta mixture, and the bulk of the grated Parmigiano. Mix thoroughly — even distribution cannot be achieved once the mixture is in the dish. The mixture should be moist but not wet; excess sauce at this stage will prevent crust formation.
6
Oil a deep baking dish generously. Transfer the pasta mixture, pressing it in firmly and evenly. Scatter the breadcrumbs and remaining Parmigiano over the surface and finish with a drizzle of olive oil. Bake at 200°C until the top is deeply golden and a knife inserted to the centre comes out clean and hot to the touch — approximately 35–40 minutes.
7
Remove from the oven and rest for a minimum of 15 minutes before serving. The dish must be sliced, not scooped; without this rest the layers collapse. For the most consolidated result, the dish may be held 1–2 hours and reheated at 180°C before service.