Dice the cucumbers and tomatoes, and thinly slice the red onion.

In a small bowl, whisk together olive oil, red wine vinegar, dijon mustard, salt, and black pepper.

In a large mixing bowl, combine the diced cucumbers, tomatoes, red onion, parsley, and basil. Pour the dressing over the salad and toss to combine.

Transfer the salad to a serving dish and enjoy!