This variation of Sarde a Beccafico includes a tangy and flavorful topping made with lemon and capers. The sardines are stuffed with the traditional breadcrumb mixture and baked in the oven. Meanwhile, a simple topping is made with lemon zest, lemon juice, capers, and olive oil. Once the sardines are cooked, the topping is spooned over them. The combination of the sweet stuffing and the tangy topping makes for a delicious and well-rounded dish.