Casadinhos are traditional bite-sized cookies originating from Brazil, where they're a staple at weddings because the name of these cookies means married in Portuguese. The cookies are usually made with a simple combination of butter, flour, eggs, and sugar, while lemon zest and vanilla can be used for extra flavor.

Pieces of dough are rolled into little balls that are slightly flattened and baked until golden. The cookies are then traditionally filled with either dulce de leche or guava paste (the filling is sandwiched between two flat, often heart-shaped cookies).