Preheat oven to the lowest setting, between 150F to 200F, with the top oven rack in the middle position. If making more than one tray, place the second oven rack right below the first. Line a baking sheet with parchment paper. Do not use wax paper.
Blend:
Add the berries and honey into a blender and blend until smooth. Add the lemon juice to keep the fruit leather bright in color; it's not essential to the recipe, just for looks.To remove the berry seeds, pour through a sieve.
Pour the mixture onto the prepared baking sheet and, with the back of a silicone spatula, spread the berry mixture into a thin, even layer. The middle tends to be thicker than the sides, spread this out to just as thin since the middle is the last thing to dry out.
Bake:
Bake for 4 to 6 hours, until the fruit leather peels away easily from the parchment and the middle is no longer wet. If baking multiple baking sheets, swap positions after 2 to 3 hours. Remove the tray from the oven onto the counter to fully cool down for 4 hours or overnight.
Roll them up:
With scissors, cut the parchment paper from one end to the other, into strips. Roll them up, parchment and all.
To eat, separate the fruit leather from the parchment as you go.
Storage:
Store the fruit leather rolled up in a zip bag or an airtight container in the fridge or pantry for up to 1 month.
Notes
Oven temperatures will vary. Start checking the fruit leather after 3 to 4 hours. If you leave it in too long it will crisp up.