Try this...
Homemade Dried Apples
1. Core 4 medium-size tart cooking apples. Peel apples if you like. Slice the apples into rings, about 1/4-inch thick.
2. To keep the apple rings from browning, in a large bowl, combine 2 cups cold water and 2 tablespoons lemon juice. Add the apple rings, making sure each apple ring gets coated with the water-lemon mixture. Let stand for 5 minutes. Drain well; pat apple rings dry with paper towels.
3. Preheat oven to 300°F. Lightly coat 2 wire racks with nonstick cooking spray. Arrange the apple rings in a single layer on the wire racks, making sure rings do not touch or overlap. Set each rack on a baking sheet. Bake for 15 minutes. Reverse positions of the baking sheets in the oven, moving the baking sheet from the top oven rack to the bottom oven rack and vice versa. Bake for 15 minutes more. Turn off the oven. Let the apple rings dry in the oven, with the door closed, for 3 hours. Remove from oven.
4. To store, place apple rings in large heavy-duty plastic bag. Close bag.
Emilia xx