Use a paring knife to peel an apple, being careful not to remove too much of the flesh. Place the apple on a cutting board, stem side up, and slice vertically, as close to the core as possible, into 4 pieces. Discard the core.
To chop apple, place each piece of apple, flat side down, on a cutting board, and cut into strips. Rotate the strips and quarter turn, and cut into small pieces.