The verdict: OMG THESE ARE AMAZING!! I think this is my favourite recipe so far! Both to cook and especially to eat. Oh my.
Special utensils or cookware: Just a muffin tin. Preferably one with nice DEEP muffin holes. Mine does not have deep holes, and even while the dough was rising (the second rise, once it's in the muffin tin) the syrup overflowed out of the holes!
Repeatability: Oh yes! In case you didn't get it before, this stuff is GOOOOOOOD! I will definitely make these again. Preferably when I've got a crowd to feed, because they really are very rich. But they also go very well the next day, especially after a little bit in the microwave. Oh yes, they were just as good the next day!
Sauciness: See above re sauciness!! Nigella's final instruction is "Leave to cool, then apply to face - as if you needed my encouragement". Schnecken is saucy, sticky and oh so satisfying!
Overall pleasure level: If I could give these 11/10, I would! Heck, since I can make the rules, I'm going to - 11/10 for these!! Fantastic!! Make them, you won't regret it! Next time, I might try them with pistachios, rather than walnuts. Or maybe cashews. I don't think you can lose!