First, bring a large pot of salted water to a boil. Add your pasta and cook it according to the package directions until it is al dente, or firm to the bite. Overcooked pasta can become mushy once mixed with the dressing.
While the pasta is cooking, you can prepare the rest of your ingredients. Halve the cherry tomatoes, dice the cucumber, and thinly slice the red onion. Crumble your block of feta cheese. This prep work ensures everything is ready to go.
In a small bowl or a jar with a tight-fitting lid, combine the extra-virgin olive oil, red wine vinegar, minced garlic, and dried oregano. Whisk or shake vigorously until the dressing is emulsified. Season with salt and pepper to taste.
Once the pasta is cooked, drain it in a colander and rinse it under cold water to stop the cooking process and cool it down. In your large mixing bowl, combine the cooled pasta, olives, tomatoes, cucumber, red onion, and crumbled feta.
Pour the prepared dressing over the pasta and vegetables. Toss everything gently until all the ingredients are evenly coated. For the best flavor, cover the bowl and refrigerate the salad for at least one hour. This allows the flavors to meld beautifully. Garnish with fresh parsley or basil just before serving.