These homemade Nectarine Blueberry fruit roll ups are easy to make and are super economical. You basically are dehydrating your fruit purée mixtures... Feel free to use any fruit you like, but be sure to use 4 cups total.
Puree the nectarines and blueberries in separate batches in a food processor or blender until smooth (adding half a lemon's juice to each batch).
Divide the purée evenly between two rimmed baking sheets with Silpats or parchment paper. Using an off-set spatula and spread the purée as flat as possible until it's about 1/8-inch thick. I left some areas really thin where I was to pour the blueberry purée.
I laid the nectarine down first then made the blueberry purée. Pour the blueberry purée in a serpentine fashion over the nectarine areas you left a little thinner and then smooth out with off-set spatula.
Bake the purée for 6 hours. The fruit roll-ups are done when the purée is dry and pliable. Take a peek and pull up an end. If the bottom side of the roll-ups are still wet continue baking them until they are fully dried.
Remove the roll-ups from the oven and place a piece of wax paper on top of the roll-ups. Invert the baking sheet onto a flat surface and peel off the Silpat or parchment paper base. The wax paper and the fruit will stick together. Cut the sheet into long strips and then roll up into individual strips.