Quick and easiest way I usually like to do a Fruit Roll up is to buy a 32+ oz. of Apple Sauce and mix in my favorite fruit, and/or flavored punch or lemonade mixes.
Healthier, If you have apples that you need to process, cut them into slices and boil for about 10-15 minutes on a low-medium heat,

then puree

Ingredients
Apple Sauce (32oz) -or-
Apples (6-8 Apples) cooked, puree
MIX OPTIONS (Fruit Healthier options)
Strawberries
Blue Berries
Black Berries
Pineapple
Orange Juice (1/2 cup)
Fruit Punch (1-2 provided serving spoon )
Lemonade Pink/Lemon (1-2 provided serving spoon)
It’s really up to you from here for figuring out what flavor profile you want by deciding if you use fruit, orange juice (or not), or if you stick with a flavored mix. I suggest do samples in smaller bowls with desired mix.
So far my suggested trial mixes favorites are

Mix #1
1/2 cup orange Juice
Fruit Punch (1 provided serving spoon )
Mix #2
1 Fruit Punch
1 Pink Lemonade
Mix #3
Lemonade Pink/Lemon (2 provided serving spoon)
Mix #4
Fruit Punch (2 provided serving spoon )
Mix #5 (Healthier)
Strawberries
Orange Juice
Preparation
- Pour your choice of Apple Sauce (or Puree Apples) into a bowl (or bowls) to make various flavors
- (optionally) Add Fruit (Strawberries, Blue Berries, Black Berries, Pineapple)
- (optionally) Add Orange Juice for extra sour taste
- (optionally) Add 1-2 scoops of Punch/Lemonde mix or Combination of both
- Mix well with Spoon
- Spread out over parchment paper

6. Fan Dehydrate (temp 130-145 degrees) for about 6-8 Hours

Serve
Easy to roll up Parchment Paper and cut off slices
Stores well in Freezer, pull out and let it rest for 30 minutes before serving.