A nutritious treat that's perfectly easy to make, amazingly crisp, lightly cinnamon sprinkled, and they have such a delicious concentrated apple flavor. Easily one of the best snacks!
Remove stem from apples then carefully cut apples with a mandoline (I like this one here) cut to 1/10th to 1/12th-inch thickness. Poke out apple seeds that are stuck in the center of slices (optional but recommended).
Align apple slices side by side on baking sheets (they can tilt up the inner rim of the baking sheet along the edges if needed so you can fit more, just don't overlap).
Lightly dust apple slices with cinnamon.
Bake in preheated oven 1 hour and 15 minutes.
Then rotate pans to opposite oven rack and continue to bake until apples are dry (and crisp when rested at room temperature for 2 minutes), about 1 hour to 1 hour 15 minutes longer.
Let cool then store in an airtight container.
Notes
*Good apples to use here that I've tested include honeycrisp, gala, pink lady, tango, and fuji.
If you want sweeter apple chips you can sprinkle 1 to 2 Tbsp sugar over the apples though I don't think it's necessary unless you use tart apples.