I thought good pasta salad came from a box for years. But now I know differently and you will too! Make this version with your favorite vegetables and spices. You can't mess it up!
Bring a large pot of salted water to boil and cook rotini according to package directions. Drain, set aside while you make the dressing.
Make the dressing by adding the Italian seasoning, oregano, garlic, salt, and pepper to a small bowl. Add the vinegar and stir to combine. Then with a whisk, stir briskly while slowly pouring in the olive oil. Set aside.
In a large bowl, add the pasta (it's fine if it's a little warm), the mozzarella, peppers, olives, tomatoes and onion. Add the dressing and stir to combine. Give it a taste for seasoning and add any additional salt or pepper if needed.
Cover and refrigerate at least 8 hours or overnight. Stir before serving and add a drizzle of oil if it looks dry.