Cook the tortellini according to package instructions and drain.
Rinse the tortellini under cold water to cool it down.
In a large mixing bowl, combine the cooled tortellini, cherry tomatoes, cucumber, olives, red onion, and feta cheese.
In a separate bowl, whisk together olive oil, red wine vinegar, salt, and pepper.
Pour the dressing over the salad ingredients.
Gently toss to combine all ingredients thoroughly.
Add chopped basil and mix again.
Taste and adjust seasoning if necessary.
Cover the salad and refrigerate for at least 30 minutes.
Serve chilled and enjoy!