Add the romaine, tomatoes, cucumbers, carrot, red onion, and parsley to a large bowl.
In a small bowl, whisk together the dressing ingredients. Pour the dressing over the salad, toss to combine, and serve immediately. If not serving right away, wait to add dressing.
Notes
Storage: Store the veggies and the dressing separately, in airtight containers, until ready to serve. The prepared veggies will last up to 2–3 days in the fridge, and the dressing will last up to 7 days.