Step 1

Bring a large pot of salted water to a boil. Meanwhile, place the oil, vinegar, garlic, salt, and a few grinds of black pepper in a large bowl and whisk to combine. Set aside.

Step 2

Add the pasta to the water and cook until al dente, according to package directions. Drain and run briefly under cool water to cool the pasta down. Drain well again.

Step 3

Add the pasta, mozzarella, sun-dried tomatoes, chopped tomatoes, and olives to the bowl of dressing. Toss thoroughly to combine. Let sit 20 minutes, stirring occasionally, to allow the flavors to meld. Fold in the arugula. Taste and season with more salt, pepper, or vinegar as needed.