"Delicious pesto sauce that can be made nut-free or dairy-free (if you omit the Parmesan cheese). Add more or less of your favorites to reach your desired consistency or taste. Use on pasta, pizza, as a dip, etc."
Combine garlic scapes, basil, parsley, Parmesan cheese, scallion bulb, salt, and black pepper in a food processor; pulse to chop. Pour olive oil in slowly, with the processor running, until pesto sauce is smooth.