In a large bowl combine all ingredients one after the other on the list, mixing first the dry ones and then adding the wet ones.
Scoop the batter in 12 larger batches on a baking dish with parchment paper. Don't flatten them and let enough space between each other. They will flatten by their own and get large.
Bake for 15 minutes or until golden.
Take them out and let them cool out well.
I didn't prepare cookies but spread the whole batter in one large 'cookie' on the parchment sheet. I didn't need cookies to eat but to crumble them.
And I let the cookie 5 minutes longer in my oven. Just to dry it out more.
In the first moment I didn't like the arrowroot cookie too much. The next day it was great in taste and consistence. I crumbled it and on the rest I put the remaining chocolate on. It was a super great dessert. In summer it will be perfect on ice-creme and maybe for a muesli crumble with nuts as well. Will try that!