Special equipment: a mandoline slicer
Preheat the oven to 225 degrees F. Line two cookie sheets with parchment.
In a small bowl, combine the anise, ginger, pie spice and salt.
Using a mandoline, slice the apples 1/8-inch thick. Arrange the apples on the prepared cookie sheets, making sure they are close but not touching. Sprinkle the apples with the spice blend. Bake for 1 hour. Flip the apples and bake until crispy, another 1 hour to 1 hour 15 minutes. Cool completely. Store in an airtight container for up to 3 days.