Using fresh chard leaves in place of the usual basil is a great way to enjoy the classic sauce year-round. You could also try spooning the pesto over squares of pan-browned polenta instead of pasta.
Pulse garlic in a food processor to chop. Add chard, walnuts, grated parmesan, and parsley; whirl until finely chopped. Scrape down inside of bowl. Add oil, salt, and pepper and process just until smooth. Serve with pasta and shaved parmesan.
Note: Nutritional analysis is per serving.
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.