These biscuits are so unusual, at least from what I've experienced.
Thin, almost as wafers, they have the appearance of a cookie's odd cousin and the texture almost of toffee, with you having to pull them apart, and not crumbling like your average cookie. But this is what makes them taste so good, and never mind that they are so thin, their flavour is condensed down into that moderate bite. The flavour is so rich, in fact, that you may need to take some time before reaching for another! (Which means that they're great for sharing ;) )
I need say no more, just give them a try, and maybe even adapt these to suit your own personal flavour biscuit! Let me know what you come up with, or how these particular ones turn out for you.
YIELD: about 17 medium cookies
PREP TIME: 20 minutes
COOK TIME: 10 minutes
TOTAL TIME: 30 minutes
200g dark chocolate from a bar, chopped and divided into 60g and 140g
1 tbsp cocoa powder
2 tablespoons butter
1/4 cup white sugar, 1/4 brown sugar
1/4 cup all-purpose flour, sifted
1/4 teaspoon baking powder, sifted
I read, took and adapted the recipe from AverieCooks, here's the link: http://www.averiecooks.com/2013/03/soft-and-chewy-brownie-cookies.html -so you can thank her for this discovery!
Have a look at her other recipes too, I've tried and tested a few ;)
I basically adapted her recipe (accidentally-let's-say-this-is-on-purpose-ok?) She made her's soft and chewy (I actually did too, although they turned out more soft and less chewy for that batch!). I used different baking trays, a muffin tray which turned my mixture soft and like brownies, but nothing like cookies (I admittedly didn't wait the hour+ needed, only 10 minutes). To make the cookies 'wafer-thin' you need to scoop the mixture out onto a flat baking tray and either hope they don't spread and join (like mine, but I just cut them to separate them afterwards), or cook them like brownies, pouring all the mixture out onto a baking tray (making sure it's not too deep, but very thin, about 1cm high) and cutting them afterwards (into squares with a knife or circles if you have a cookie cutter and the mixture isn't too hard).