Chop romaine and cilantro. Slice onion, avocado and cucumber. Half tomatoes. Lightly mix.
Combine olive oil, lemon, salt and pepper. Drizzle over salad and combine. Serve immediately. Enjoy!
If you want to prep this earlier, you may do so, just slice the avocado and add the dressing right before serving. It will get soggy quickly. Don’t pour all of the dressing at once, add as much as needed.