Peel the skin and slice the apples as thin as possible.
You can let the seeds as is.
Drizzle the cinnamon powder on top. If required drizzle powdered sugar too.
Bake for 12 minutes and flip the apple slices.
Now bake again till they become crispy and curl up. (It took me about 13 minutes)
Add powdered sugar depending upon the sweetness of the apples. The baking time depends upon the thickness of the apple slices. After 15 mts keep checking the apples and once they start to curl up, remove them from the oven and let it cool.