Typically, I'll cook an entire box of pasta, something like rigatoni that will allow the mix to stick. I save a little of the starchy pasta water on the side for later.
Separately, I'll combine a jar of sun-dried tomatoes in oil with whatever cheese, herbs, etc. that I want to add in that night. For these photos, I happened to have fresh basil from my coworker, garlic, and some boring parmesan cheese in a shaker. But once you toss it all into a food processor or mini chopper (this night I used my mini chopper) and mix it up, you come up with a great flavor. You could do this to make an easy pesto too, with pine nuts and more basil vs. tomatoes.
Once the sauce gets to a good consistency, I stop pulsing it in the chopper. It should be well-mixed.