Sweet Pea Pesto Pasta

Cook pasta according to package directions.

Meanwhile, place peas, spinach, basil, Parmesan, olive oil, walnuts, garlic and salt and pepper in a blender or food processor.

Two minutes before pasta is done, ladle out 1/2 cup hot pasta cooking water and add to blender. Pulse until smooth, scraping sides and adding additional pasta water by the tablespoon, if needed.