In a large bowl, combine the cherry tomatoes, cucumber, red onion, basil, and parsley. Toss gently to mix the vegetables and herbs evenly.
In a separate small bowl, whisk together the olive oil, red wine vinegar, Dijon mustard, minced garlic, salt, and pepper until well combined.
Pour the vinaigrette over the vegetable mixture and toss until everything is evenly coated.
Let the salad sit for at least 15 minutes at room temperature to allow the flavors to meld. For best results, refrigerate for 30 minutes before serving.
Serve chilled or at room temperature, and enjoy!