This type of senbei is called オランダせんべい <orandasenbei> or Dutch Senbei. Why? I had no idea but I just bought it wondering what senbei from my country would taste like. It didn’t taste like anything Dutch to me.
Supposedly, it’s called Orandasenbei because the senbei itself looks kinda European to Japanese and in the place where the rice that is used for this is coming from, they say おらだ <orada> instead of 私達の <watashitachi no> for the word ‘ours’. Orada -> Oranda.
To make matters even more confusing, there is another thing called Orandasenbei but it’s completely different. It’s some Nagasaki product that is supposedly based off the footprints from the boots that the Dutch were wearing in the old days…