Roasted broccoli is a wonder. A hot oven can transform the mild vegetable into something rich and caramelized, and the depth of flavor it's capable of never ceases to amaze me. And tossing with hot pasta is about the best way I know to transform that magic into a full meal. This recipe, from Diane Rossen Worthington's Seriously Simple Parties, takes things a step further by tossing the whole thing with a pistachio gremolata.