To the bowl of a food processor add walnuts, garlic, arugula, kale, basil, parmesan, lemon juice, salt, and pepper. Start blending and with the motor running, slowly add oil until it’s the consistency you like.
Scrape the bowl down. Taste and add extra salt or lemon juice if needed. Pulse a few more times to combine.
Pesto can be stored in an airtight container in the refrigerator for up to 1 week. Freezes well.
Notes
The combination of arugula and kale give this pesto a unique, delicious flavor. Feel free to switch up the greens with what you have on hand, just don’t omit the basil if you want the classic pesto flavor.  Â
Walnuts can be substituted with pecans, pine nuts, or almonds.
Pesto stores great in the freezer. Store flat in a freezer safe bag or in an ice cube tray for smaller servings.
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