Fruit leather is very simple to make with food dehydrator! You can use one fruit at a time or you can mix and match. Be aware that the drying time does vary with different fruit so if you start playing around with different combinations you might notice different lengths required.
Evenly spread the watermelon puree onto the center of the baking sheet using a spatula so that it is approximately 1/4 inch thick. * (4) Bake the Watermelon Fruit Leathers for 6-8 hours, rotating the pan every hour. * (5)
Spread the fruit mixture evenly across the fruit dehydrator tray. Put on the lid and set the food dehydrator to 140F (60C). The dehyrating time varies depending on the fruit and can be anywhere from 4-12 hours. It is done when the fruit is leather and no longer sticky to the touch. Cut into individual portions and roll up in parchment paper.
Place pieces onto tea towels to drain a bit (I put mine on my dehydrator trays over the sink and just let them dry out for about fifteen minutes) Place watermelon pieces on trays, using parchment paper if desired. Dry at 135°F / 57°C for between 8-18 hrs until dry and leathery, with no signs of stickiness.