What size pan? Is it two separate rounds with the filling spread between them?

Since the author says to pour the batter into "a greased and floured pan," I would assume that it's one pan, and then the cake would have to be cut in half to be filled. But that isn't entirely clear, so you might consider sending the recipe author a direct message by going to their profile page (http://food52.com/users/25085-lulussweetsecrets) and clicking the envelope button.