What is typically found in the stuffing of lasagna classico?

Lasagna Classico is traditionally made with layers of pasta, marinara sauce, and a filling that characteristically includes ground beef combined with ricotta cheese. This combination provides a hearty texture and rich flavor that is essential to the classic lasagna dish. The ground beef adds a savory element, while the ricotta cheese contributes creaminess and a mild taste that balances the dish, making it a well-loved staple in Italian cuisine.

The other options involve different ingredients that do not align with the traditional preparation of Lasagna Classico. For example, a vegetable medley and spices would lean towards a vegetarian version, while chicken with spinach and pork with mozzarella represent entirely different recipes or variations outside the classic rendition. Thus, the combination of ground beef and ricotta cheese is specifically what defines the stuffing of Lasagna Classico.