Steps
1. In a large bowl, combine the diced cucumber, cooked quinoa, cherry tomatoes, and red bell pepper.
2. In a small bowl, whisk together the olive oil, lemon juice, salt, and pepper.
3. Pour the dressing over the salad and toss gently to combine.
4. Garnish with fresh parsley if desired.
5. Serve immediately or chill in the refrigerator for 30 minutes for enhanced flavors.