I had a request yesterday for my mom's fruit roll up recipe so here it is! With any dehydrating recipe the time will depend on your machine.
For the easiest way to make them just spread a very even layer of applesauce on your dehydrators trays(if you have open slot trays make sure you lay down parchment paper first!)
Dry the sauce until it's only very slightly sticky but don't leave it until it becomes crunchy because then they will no longer roll. Take out the trays and let them air dry for a bit before you roll them up and store them in wax paper in ziplocs(they do not need to be refrigerated) My mom has rather large trays and cuts each large piece into thirds before she rolls them up.
You can also puree the fruit of your choice and spread that on the trays to make your fruit roll ups or you can even use flavored apple sauce.
The key is to make sure the puree or sauce is spread very very evenly on the tray and keep an eye on them while they dry so you can get them off before they get crunchy!