Walnut-Parsley or Walnut-Celery Pesto

Ingredients

• 1 cup tightly packed fresh parsley or celery leaves
• 1/3 cup chopped toasted walnuts
• 1 small garlic clove, smashed and peeled
• 1/2 ounce Parmesan or Romano cheese, finely grated (1/4 cup)
• 1/4 teaspoon finely grated lemon zest
• 1 Tablespoon fresh lemon juice
• 1/4 cup extra-virgin olive oil
• Coarse salt and ground pepper

Instructions

1. In a food processor, pulse parsley or celery, walnuts, garlic, Parmesan, lemon zest, and lemon juice until combined, about 10 seconds. With machine running, add olive oil in a slow, steady stream and process until a paste forms. Season pesto with salt and pepper and transfer to a small bowl.
2. Serve with grilled meat or vegetables or toss with pasta.