Yes, there are some Harry Potter nerds living in our apartment.
The good news is one of them has mastered library summoning charms...and the other one is a wizard in the kitchen.
Once upon a time, these two worthy souls received rhubarb and beets in their weekly CSA box, and employed them in a delicious, rich, rhubarb crumble from The Unofficial Harry Potter Cookbook. They altered the recipe slightly (adding beets and nixing about half the sugar) and were delighted with the results.
Want your own crumble? You lazy Slytherins treat everyone like house elves! Buy the cookbook yourselves.