Add the nuts, garlic, nutritional yeast, salt, and pepper to a food processor or high-powered blender. Pulse on low speed to break up the nuts and garlic just slightly. Add in the remaining ingredients, besides the olive oil, and begin to pulse the mixture until the ingredients are starting to break down. With the machine running, slowly stream in the oil with the machine on low until the sauce begins to come together.
½ cup pistachios, 2 small garlic cloves, 2 tablespoons nutritional yeast, Salt & pepper, 4 cups power greens blend or baby kale, 1 cup basil, Zest & juice from 1 lemon, ⅓ cup extra virgin olive oil