With fancy corer and peeler! Which have like, damn gotten so much better. In the 90s we had a peeler/corer that clamped to the end of a table. This was smaller, lightweight, and used suction. I was nervous, that seemed like it might not work well.

Fuck man it worked a wonder. Apple went in, cored, peeled, sliced came out. And now the slices are coated in lemon juice, sugar, cinnamon, nutmeg, vanilla.