Place all ingredients, except olive oil into a food processor. Puree the ingredients until smooth. While the pesto is still being pureed, pour the olive oil into the mixture in a steady stream.
Remove the pesto from the food processor. Toss with gnocchi, top on crostini, or serve alongside grilled meats. If not using immediately, cover and store in the fridge up to 2 days.
Notes
Pesto will slowly brown as it is stored in the fridge. If this bothers you, simply skim off the brown portion and serve the pesto as normal.