Rinse the apricots and remove the seeds.
Using a blender or food processor, process the apricots until they are a smooth puree. Using a blender, I put about 6 cups of apricots and about ¼ of water to process the fruit. You want to use as little as water as possible. Repeat until all fruit is used.
If necessary, mix sugar into the fruit puree.
Line a baking sheet with parchment paper. Pour the fruit leather puree in a thin layer. It should around ⅛" to ¼" thick. It will shrink thinner as it dries. Place into the sunshine on a hot day. Bring in the fruit leather overnight and return again in the morning into the sunshine. It will take around 2-3 days to fully dry.
On day 2, the fruit leather should peel off the parchment paper. Flip the fruit leather over so it dries evenly. On the 3rd day, I hang the fruit leather to air dry on a clothes line.
To store the fruit leather, place the fruit leather on a piece of parchment paper and roll up, to prevent from sticking to each other. It should last several months in a cool dry place. (If your kids don't eat it first!)