1/2 cup grated Parmesan cheese or nondairy cheese substitute (optional)
1/4 teaspoon salt
Instructions
Place walnuts or pine nuts and garlic in food processor and pulse until minced. Add oil and pulse quickly again. Add basil leaves, optional Parmesan cheese, and salt, and pulse again until leaves are finely chopped, scraping sides of bowl as necessary.
Serve immediately, or freeze in 2-tablespoon portions in ice cube trays, then pop cubes out and store in plastic bags in the freezer.