This is YUUUMMMMY! It was also a hit at Vacation Bible School.
3 C unsweetened applesauce
1 pound fruit of your choice (fresh or frozen)
2-3 T 100% juice concentrate
Preheat oven to lowest setting (170-200), and line a cookie sheet with parchment. Blend all ingredients. Spread the puree over the parchment lined cookie sheet, about 1/4 inch thick. Bake in oven for 4-8 hours. When fruit is no longer sticky to the touch remove from the oven. Should be dry but not crisp. use a sharp knife or scissors to cut into strips.
You can also do this in a dehydrator. I have an Excalibur dehydrator with liners for wet things like this. I spread it on and dehydrate it at 130 degrees for 8-10 hours. I did have trouble with the three different flavors wanting to separate as they dried. I had to smear more puree on where it was separating and keep drying it. Its easier to just do one flavor. :)