Bring a large pot of salted water to a boil and cook the pasta according to the package instructions.
Meanwhile, combine all of the pesto ingredients in a food processor or high powered blender and blend until evenly incorporated. If you’d like your pesto thinner, add additional olive oil (1 tbsp at a time) until you reach your desired consistency. Season with salt and pepper to taste.
Once the pasta is al dente, drain the pasta and return it to the pot. Add the pesto to the cooked pasta over low heat. (Add in sun-dried tomatoes, optional). Mix until all noodles are covered and pesto is warmed, about 2-3 minutes. Store any leftover pesto in the fridge for up to 5 days or freeze for up to one month!