Take a medium container with a tight-fitting lid and pour in the extra virgin olive oil. Top with onion slices, honey, salt and the freshly ground black pepper.
Close the lid of the container properly and shake it vigorously in order to blend the ingredients inside.
Pick a large serving or salad bowl and place the bite-size pieces of Romaine or Cos lettuce into it.
Arrange the peeled and thinly sliced orange slices on the top of the lettuce.
Unseal the container and drizzle the honey vinaigrette dressing all over the salad. Toss very lightly to mix and coat the ingredients.
Serve and enjoy!