In a large bowl combine the tomatoes, cucumbers, onions and basil. Toss to combine.
In a separate bowl mix together the balsamic vinegar and olive oil. Pour over the vegetables and season with salt and pepper. Toss to coat all in the dressing.
Sprinkle with feta cheese, serve chilled
Notes
Nutrition facts are just an estimate of the ingredients used. *You can use any type of fresh tomato in this salad