@lydialurch
hmmm, now i'm not! i haven't tried butternut, but when i tried uchiki kuri (the pumpkinesque we most often have), it did not go well: the seeds are very thick ...
i'll (ask husband to) have a go with butternut next time we have one. (we use oil as i can't have butter, but it works v well with pumpkin-pumpkins)
tyvm!