Add the dressing ingredients to a small jar and shake to combine. Refrigerate until ready to serve the salads.
To make the salads, divide the mixed salad greens among 4 plates or bowls.
Top each salad with an equal amount of marinated artichoke hearts, sliced black olives, and red onion slices.
To serve, shake the jar of dressing and pour the desired amount on each salad.
Make sure to purchase the marinated artichokes that come in a glass jar rather than the canned variety.Store the dressing separately from the salad if making it in advance. The dressing will last 2-3 days refrigerated. Shake well before using.