Coffee Tres Leches Cake might be the ultimate make-ahead dessert. Claire Saffitz combines a light, airy sponge cake with a rich coffee-infused tres leches soak, then finishes it with fluffy mascarpone whipped cream and a shower of dark chocolate. Perfect for birthdays, dinner parties, holidays, or any gathering where you need a guaranteed crowd-pleaser, this easy cake gets even better as it sits in the refrigerator. The combination of espresso, vanilla, sweet milk, and chocolate creates a deeply flavorful dessert that's surprisingly simple to make at home.