You can easily buy a cake at the store and skip making it. When you whip the egg whites for the meringue, make sure the utensils and bowl are very clean. The egg whites will whip up faster and make for fluffier meringue. You can make this one giant dessert or make individual ones, counting a slice of cake, about 1 1/2 scoops sorbet and an eighth of the meringue per serving.