Mexican Cheese Tartlets (Tartas de Requesón)

In Mexico these tarts are both sold and consumed with panes dulces, Mexican sweetened breads that are eaten for breakfast and later in the day for merenda, the late afternoon meal. The cheese used in Mexico is requeson, which is very similar to Italian ricotta, as it is made from whey rather than milk. But it’s usually clotted at a higher temperature, making the curds harder than ricotta, and has a higher salt content. Part-skim-milk ricotta is a perfect substitute.