Drain pasta and add to skillet, then stir in Parmesan cheese. Serve immediately.
Notes
Resist the temptation to use powdery Parmesan from a green can. Freshly-grated Parmesan makes a huge difference in how this dish turns out.
If you don't have cream on hand or just don't want to use it, you can substitute whole milk. The sauce's texture won't be quite as luxurious, but it will still be pretty good.
Recipe by I Wish I Was a Muffin at https://iwishiwasamuffin.com/chicken-broccoli-parmesan/