Hi, Erica!
Thanks for sending in your dining question to the Disney Parks Moms Panel. The food courts at the Disney Resort hotels do change items on their menus from time to time -- and the Signature Dining locations often change their entire menus seasonally. Everything POP Shopping & Dining at Disney's Pop Century Resort offers 7 different food stations serving a huge variety of dishes to please every palate.
I checked the current Everything POP menu posted on the Walt Disney World Resort website and, unfortunately, I don't see the Beef and Broccoli entree listed any longer. But the good news is that there are several beef dishes currently available, including Pot Roast, Beef Brisket, and Beef Stroganoff. Also, in-room pizza delivery is an option daily from 4:00 PM to midnight. In addition to the specialty pizzas, guests can order wings, desserts, and beer and wine for delivery. For the most up-to-date menus or to find out if a specific item may be available during your visit in January 2015, I recommend calling Pop Century directly at 407-938-4000 approximately one month or so prior to your arrival date.
If you've never had the chance on a previous visit, be sure to try the Tie-dyed Cheesecake -- it's a specialty house-made dessert found exclusively at Disney's Pop Century Resort!
Please let us know if we can assist you further. Happy planning!