If you have a dehydrator: lightly oil the solid sheets of the dehydrator. You can also line them with parchment paper. If you're using an oven: line two rimmed baking sheets with parchment paper. Preheat the oven to the lowest temperature it will go. It shouldn't be above 175 degrees.

Combine the mango, lime, applesauce and honey in a blender and blend until smooth. Taste, and adjust for sweetness. The puree should be the texture of thin baby food. If it's too thick, add a bit of water.

Pour a very thin layer of the puree on the prepared trays of the dehydrator or the baking sheets. Dehydrate according to your machine's instructions, or dry in the oven for at least six hours, but up to twenty hours. When the fruit roll-ups are done, they should be just barely sticky.

Cut into strips (keep them lined with parchment if that's how you dehydrated them), and seal in an airtight jar at room temperature for up to a month.