Peel the oranges with a knife, being sure to remove all of the skin and pith. Thinly slice and place on a serving plate or tray.
5 medium oranges
Peel and thinly slice the red onion, and add to the orange slices. Top with olive oil, black pepper, and salt. If you have time, let the salad rest, covered, for 2-3 hours before serving. Otherwise serve immediately.
1 medium red onion, 1 tablespoon olive oil, 1 teaspoon fresh cracked black pepper
The onions will mellow out if the salad is made in advance. It can be stored in a sealed container in the refrigerator for up to three days but is best the day it's made.