What is a Mediterranean dish of diced cucumber and tomatoes with Feta cheese Kalamata olives thinly sliced red onions?

That sounds delicious! You're describing a Greek Salad, also known as Horiatiki Salata.

It's a classic and refreshing dish that features:

* Diced cucumbers

* Tomatoes

* Feta cheese

* Kalamata olives

* Thinly sliced red onions

It's often dressed with olive oil, red wine vinegar, salt, and oregano. Sometimes it also includes bell peppers and capers.

Let me know if you'd like a recipe!