This doesn't require even a minute of cooking - just assembling ahead of time. Be sure to use mascarpone cheese, a naturally sweet Italian cream cheese for whih there truly is no substitute. You can find it in Italian delis and large supermarkets. (But, of course- be sure to use the "lighter" ingredients as listed to ensure that this truly is a healthier recipe). HINT: To make Chocolate Tiramisu, use a fat-free marble sponge cake instead of the regular sponge cake.