Finely chop the walnuts and the garlic in a food processor; add half the basil and the salt; coarsely chop. Add the remaining basil and the parsley. With the food processor running, add the oil in a slow steady stream through the feed tube until mixture is thoroughly blended. Transfer to a bowl; fold in the cheese. Remove 1/2 cup of the pasta cooking liquid before draining the pasta. Toss hot pasta with the sauce and the reserved cooking liquid. Serve at once with additional cheese, if desired.

pot during the spring and summer and make a lot of batches of pesto (omitting the cheese) and freeze individually in small Dixie cups. After it is frozen, I remove from the cups and wrap in Saran Wrap, then place in a freezer Ziploc. To serve defrost as many "pesto patties" as you need and follow above directions remembering to save the pasta water and add cheese. I also use 4 cloves of garlic in this recipe (we love garlic) and add more salt and pepper.