This is a classical Austrian confection called Punschkrapfen, which essentially means punch cake. It is a very dense cake because it’s pretty much saturated with rum. I didn’t actually know any of this when I bought it at the shop, because the wrapper was in German; I really just bought it because it looked pretty. (I think my justification was something along the lines of “It’s okay if I buy this because it’s Easter colors, and tomorrow is Easter. I totally deserve this!”)
Unfortunately, it’s not as good as it looks. I like rum in my desserts as much as (and probably more than) the next guy, but the chocolate cake flavor of this is completely overpowered by the taste of rum. And I don’t like it when things interfere with my chocolate.
If strongly alcohol-flavored sweets are your thing, I’d say you should give this a try. But as for me, I will be looking out for Vienna’s sacher torte instead.