This Cashew Pesto transforms raw cashews and fresh basil into a vibrant, creamy sauce. It's ready in just 20 minutes and bursts with deep, layered flavor!
Fill a medium pot with 3 cups of water and add 1¼ cups of raw cashews. Once boiling, reduce to medium and simmer for 15 minutes to soften the nuts. Drain the cashews after 15 minutes in a colander and let them cool for a couple of minutes. They don't need to be cold, just cooled down.
Bring a small pot of water to a boil and drop 1 cup of basil leaves into the boiling water for exactly 10 seconds, then immediately transfer to an ice bath for a moment (a bowl of water with ice cubes in it). This preserves the bright green color. Squeeze out excess water. In a food processor, combine the drained cashews, blanched basil, 4 microplaned garlic cloves, ¼ cup fresh lemon juice, 1 tablespoon white miso paste, and ½ teaspoon salt. Pulse 10-12 times until roughly chopped.
Scrape down the sides if needed, and slowly drizzle in the extra virgin olive oil while pulsing until fully incorporated. If the pesto is too thick, add 1-2 tablespoons of water or more olive oil. Taste and adjust salt or lemon juice as needed. Once it's finished, transfer to a jar or airtight container and store with a thin layer of olive oil on top to prevent oxidation.
Notes
Blanch the Basil: I made two batches, one with fresh basil, one with blanched basil. Blanched basil stayed neon green after 24 hours, while fresh turned olive-drab after just 6 hours. Blanching deactivates polyphenol oxidase, the enzyme responsible for browning.
Don't Skip Boiling Your Cashews: Boiling the cashews provides an irresistible creaminess and smooth texture that cold soaking can't match, making your pesto luxuriously silky.
Don't Over-Blend: Pulse the pesto until just smooth. Over-blending can make it too thin, lose its vibrant texture, and even turn slightly bitter.
Store With a Layer of Olive Oil: Pour a thin layer of olive oil over the surface of your cashew pesto before storing. This prevents oxidation and keeps the pesto bright green for longer.