Gather a large mixing bowl and a cutting board. Chop the Roma tomatoes into bite-sized pieces and add them to the bowl. Slice the English cucumber into thin rounds. Finely slice the red onion and dice the avocados. Chop the cilantro and combine all ingredients.

In a small bowl, whisk together the olive oil and lemon juice to create the dressing.

Pour the dressing over the salad mixture and gently toss to coat without mashing the avocados.

Sprinkle sea salt and black pepper over the salad and give it a final gentle toss to incorporate the seasoning.

Serve immediately in a lovely serving bowl, garnished with extra cilantro if desired.