I find strawberry or raspberry recipes often call for straining out the seeds but I prefer to use the entire berry. I like the little pops from the seeds or it's also easy to puree them till smooth with a vitamix.

Bring blueberry puree to a boil and simmer for 10 min.

Don't pour right to the edge of the silipat, and make the edge slightly thicker as it dries out more.

Took my kids for an after school picnic in the park so this stayed in the oven a bit too long. It didn't burn, it just got a bit hard on the edges. Nothing slicing off the edges didn't solve (and my kids loved the crunchy bits).

Strawberry leather ready to roll.

Peeling off the silipat from blueberry leather.

You can see the blueberry in the background was too soft. Was a bit of a dud batch. This is the batch I didn't air dry after it came out of the oven. But we ate them anyway (just not in public....black teeth are not attractive).

After you roll the fruit leather with parchment, cut with sharp scissors into rolls.

2nd batch of blueberry a success. I waited until the frozen berries were thawed before puréeing.

Store in snack cupboard in air tight container for up to a few weeks.