Fresh, bright, and flavorful, this herby Italian condiment is brilliant on almost anything, from eggs to meatballs. But it’s also a fantastic sauce or dip for roasted vegetables. The sauce keeps, covered in the fridge for 3 days (press plastic wrap directly on the sauce surface to prevent browning of the herbs).
In a blender, combine the parsley, capers, anchovies, garlic, lemon zest and juice, red pepper flakes, and 1/4 teaspoon pepper. Pulse to combine, then stream in the olive oil and blend until smooth and thick. Season to taste with salt and pepper, if desired.