To make the dressing, combine the vinegar, mayonnaise, green onion, honey, Dijon mustard, garlic, lemon juice, dill, parsley, salt, and pepper in a blender or food processor with a metal blade. With the machine running, gradually add the oil in a thin, steady stream to form an emulsion. Set aside when complete.
Place mixed greens into a large salad bowl, top with dressing and remaining ingredients, and serve.
