Cook the pasta according to the package directions. Reserve ½ cup pasta water, drain the pasta, and return it to the pot.
Make the broccoli pesto:
While the pasta cooks, place all the dry ingredients in the food processor bowl and pulse until finely chopped. In between pulses, slowly pour the olive oil in a thin stream. Scrape down the sides of the bowl. You can add more oil if necessary to achieve the desired consistency.
Combine:
Mix the cooked pasta and broccoli pesto in the pot. Add a little bit of warm reserved pasta water and stir until you achieve a saucy consistency you enjoy.