01 -
Combine the sliced cucumbers, tomatoes, and red onion in a large mixing bowl.
02 -
In a separate bowl, whisk together vinegar, olive oil, granulated sugar, salt, black pepper, and dried oregano until well combined.
03 -
Pour the prepared marinade over the vegetables in the large bowl. Toss thoroughly to coat all pieces evenly.
04 -
Cover the bowl and refrigerate for at least 60 minutes, allowing the flavors to infuse. For maximum flavor, marinate overnight.
05 -
Give the salad a quick toss before serving. Garnish with chopped fresh parsley if desired.