In a large mixing bowl, combine the cooked pasta, diced cucumber, halved cherry tomatoes, chopped red onion, and parsley.

In a separate bowl, whisk together the olive oil, red wine vinegar, Dijon mustard, minced garlic, salt, and black pepper to create the dressing.

Pour the dressing over the pasta salad and toss gently to combine.

Chill in the refrigerator for at least 30 minutes before serving for the best flavor.