Polpettone: Italian Meatloaf with Eggs

Egg-stuffed meatloaf is a classic example of Italian home cooking. This version comes from Paola Bacchia’s book At Nonna’s Table. What drew me to her version (her mother’s recipe) was that it uses just beef as the base, rather than a mix of beef and pork or veal, but enriches the mixture with minced pancetta, plus grated zucchini, carrots, and finely ch…