It turns out that a “Matilda cake” is an actual item on menus around the world. The Internet is full of recipes to recreate the decadent cake from the Danny DeVito movie (1996). There are also recipes to recreate the Cuban Pork Sandwich from “Chef” (2014) and hundreds of other meals. These are not anomalies. People love to recreate meals from movies in order to “feel” an experience. An analytical article about this phenomenon could explore not only the reasons behind it, but also the ways fiction shapes reality. The article could also evaluate the capitalistic tendencies to profit from these cravings.
This is actually a really useful topic that's worth exploring in some depth. It's interesting to note as well that in addition to recreating food from movies (or other aspects of popular culture), there are also cookbooks which are based on a particular fandom but whose recipes aren't always explicitly drawn from the source material. The only thing I will say is that this phenomenon extends way beyond movies and into all aspects of popular culture, from books to TV series to video games. – Debs3 days ago