I tried making this recipe: http://kirbiecravings.com/2012/01/nutella-cookie-crisps.html However, since I am not in the USA, I had to convert cups to grams. It ended up being about 300g Nutella, 200g soft brown sugar, and the 6 tablespoons of flour came out to 62g. I used 1 tsp bicarbonate of soda, 1 large egg and about 120g of chocolate chips, as the recipe indicates.
The recipe said that the dough would be sticky and wet, because of the nutella, but mine wasn't. It was dry, difficult to mix the chocolate chips into it because they wouldn't 'stick' in and kept falling apart. I initially used 280g nutella, but seeing this consistency problem I added another 20g. This seemed to make it worse, and make the dough even more crumbly.
When baked for 10 minutes at 180C, after cooling and setting, the cookies taste overwhelmingly of raw brown sugar and just fall apart. They're slightly crisp outside, but the inside is soft and crumbly and just tastes of sugar. I know that 200g of brown sugar certainly isn't more than 1 cup, so I have no idea what's gone wrong.
I tried baking one of the cookies for a further 5 minutes, but it hasn't made any difference. I still have half the dough in the fridge, so if someone could help me salvage it, I'd be very grateful!
ETA: I was aiming for the cookies to be crisp on the outside, with a chewy, toffee-like consistency in the middle.