Steps
1. Wash and chop the cucumbers and tomatoes into bite-sized pieces.
2. Thinly slice the red onion and pit the Kalamata olives if necessary.
3. In a salad bowl, combine cucumbers, tomatoes, olives, and red onions.
4. Crumble the feta cheese over the salad.
5. In a small bowl, whisk together the olive oil, red wine vinegar, oregano, salt, and pepper.
6. Drizzle the vinaigrette over the salad and toss gently to combine.
7. Serve immediately or chill for 10 minutes to enhance flavors.