I have been making this for years and it is easy to make and so good. It makes quite a large cheesecake. I sometimes use light cream cheese to save on calories but don't sub with skim condensed milk or the cheesecake won't set. Gelatine is not needed it is the lemon juice that sets this cheesecake. I don't really know how long this takes from start to finish but it is easy so therefore quick to make, the chilling and decorating takes up most of the time. I have estimated 10 mins to make and about 20mins to decorate. Haven't counted time to set.