I use an 8-by-9.5-inch rectangular dish, but you can also use a 7-by-11-inch dish, a 9-inch square dish, individual cups or even circular/oval dishes of a similar size. Just trim the ladyfingers to fit accordingly. For those who prefer a version with alcohol, you can add up to 1/4 cup rum, divided between the mascarpone cream and the coffee soak.