Bring a large pot of salted water to boil and cook your rotini pasta until al dente. Typically, 7-9 minutes. Drain your pasta and be sure to rinse with cold water.
In a large bowl, combine the pasta with the remaining ingredients, dressing last. You can serve right away or let salad chill and really soak up all the flavors. Pasta salad will last in an airtight container in the fridge for up to 3-4 days.