Penne with Sun-Dried Tomato Pesto

or 454 g of mini penne (or regular penne pasta)

jar of sun-dried tomatoes in oil (about 10 oz or 300 ml)

garlic

Salt

White pepper

dried sweet basil (you can use fresh, I was out of fresh)

fresh (grated parmesan (more for garnish if you like))

walnuts

olive oil if needed (more or less depending how thick or thin you like your pesto)