Following packaging directions, cook penne in a large saucepan of boiling water. Drain and set aside to let cool.
Place avocados, pine nuts, basil, garlic and olive oil into a food processor and blend until smooth. Remove from processor into a bowl.
Stir through half the parmesan, then add the penne.
Gently toss to distribute pesto.
Sprinkle remaining parmesan and add salt and pepper to serve
Serving Size 4