I did not exactly stick to the recipe: I eyeballed the ingredients, skipped steps 3-4, used generic brand (Nuss Milk) nut cream instead of Nutella and baked them for 2 minutes. No regrets - they turned out amazing! Perfectly soft and not too sweet, just how I like them. The minimal cleanup is also a bonus.
Just one con - the dough is quite greasy, so if you're bothered by touching such things or just want to make the process a little cleaner, I recommend using disposable gloves :)