OK, I got it, it's branded and product retailed.
The filling of kinder Buenos can't be bought either, but one supermarkets hazelnut spread is identical.
Hence my suggestion, which also looks like your picture.
Thought I'd explain in a tedious long winded explanation is the norm here, short to the point answers are seen as rude.
Now you've alerted me to this, I am actually going to grow a supermarkets own brand similar hybrid.
I hope you find what you are looking for and enjoyed the experience of questions and weren't at all offended or even able to read words and add the context it's to be taken in yourself!
I wish you well in your search and thanks for the inspiration.