Place an apple on a cutting board upright with the stem facing up.
Place a sharp knife about ¼-inch away from the stem in either direction, and make a cut all the way down, making sure to avoid the core.
Turn the apple a quarter turn and make another cut about ¼-inch away from the stem. Repeat the process until you have four apple pieces. Discard the core.
Place the apple pieces cut side down and make slices thin or thick slices as desired.
Enjoy apple slices immediately or drizzle with lemon juice to store and enjoy later.
Notes
Tip: Use a rubber band or lemon juice to help keep your apple slices from browning.