You don't need pricey pine nuts or even basil to make everyone's favorite delicious green sauce. All you need is a few handfuls of greens, some nuts or seeds, a generous amount of garlic, an acidic ingredient like lemon juice, a healthy pinch of salt, and a food processor.
Add everything except the olive oil into a food processor. Pulse until everything is finely-chopped.
With the food processor running, drizzle in the olive oil slowly until the mixture is combined. Puree until smooth, scraping down the sides as needed. If the pesto is too thick, thin it out with a tablespoon or two of olive oil or water.
Taste and season with sea salt and black pepper until the flavors shine. You can also reserve a few tablespoons of nuts to add in at the end for a chunkier pesto.