Cook the pasta according to the package directions.

While the pasta cooks, add the pistachios, basil, olive oil, lemon juice, and Parmesan to a food processor or blender.

Blend until smooth and creamy.

Taste and season with salt if needed.

Drain the pasta and toss it with the pistachio pesto until evenly coated.

Serve with extra Parmesan and halved cherry tomatoes.