Preheat your oven to 400 degrees and bake them for 20 minutes. They should come out looking a little carmelized on top like this:
Next, you’ll need to puree them. This can be done if you have a good blender, or if you have a food processor. We have The Ninja, which I absolutely love. (Makes awesome baby food, too!)
Since my plums were quite tart and not quite ripe I added about 1/2 cup of sugar for the whole lot (which was about 3lbs of plums)
Then puree it up until it has a very smooth gloopy consistency. You’ll need to be able to spread it quite thin, so make sure everything is blended well and there are no big chunks of fruit.
Btw, at this point, you should taste it to make sure it isn’t too tart, if you don’t want it to be. Totally up to you how much or how little sugar you add, I wanted them to be a bit sweet, but 1/2 cup was plenty for this batch! Then take parchment paper and line your baking pan with it and make a THIN layer of puree onto the parchment paper.
I cannot stress enough that it needs to be thin. Mine ended up too thick in the middle and it ended up being a bit gooshy in the middle bit, still tasty, but quite a bit more messy while snacking on! Put your oven on it’s lowest setting. Mine has a “Warm” setting, and that works splendidly. If your lowest setting is 200 or above, stick a wooden spoon in the oven door to keep it slightly open- you don’t want to bake it, you want to dry it out, so if it gets too hot it will turn quite hard and crispy.
Bake for 6-8 hrs, or as long as it takes until it’s no longer tacky to the touch. My first batch was WAY too thick and ended up dehydrating overnight to get leathery! As long as it’s not baking or getting crispy, it’s ok to let it sit in there for quite a while.
I used a pizza cutter to cut it into strips, pressing firmly enough to cut through the parchment paper as well, so I could use it for storing. If you are concerned with your pans (Mine are old and gross, so no worries there) you can transfer it to a cutting board and do it on there.
A pretty tasty snack, and WAY cheaper than buying fruit leather at 50 cents each!