Cook the rigatoni according to package directions, drain and return to the pot.
Whilst the pasta is cooking place the broccoli in a large pan of boiling water and cook for 6 minutes. Then drain and add broccoli to the other pot with the drained pasta.
Gently heat the pot with the pasta and broccoli and stir in the pine nuts and crème fraiche. When it starts to bubble turn down to simmer stirring frequently for about 2 minutes.
Remove from the heat, stir in the parmesan and parsley and season to taste.