TIL Oreos are an imitation of the Hydrox chocolate cream-centered cookie introduced in 1908, but they outstripped Hydrox in popularity so much that many think Hydrox is an imitation of Oreo
I assume you're referring to Prinzenrolle/Prince de LU? Because both wikipedia and Griessons official website seem to agree that it was invented in Belgium
But then again, you are the observer of cookie jars, so you might know more