I am wondering if you could spread it out in a pan (like one would have for thin brownies) and after it is baked cut in squares. (thecoconutmama.com)
If you want thin brownies like mine then use a 9x13» pan instead with the same amount of brownie batter. (lemonandmocha.com)
(Plus, with such thin brownies, and no lining or flour dusting like I am accustomed to in baking, I feared scorched chocolate that would leave me chipping these out of the pan and scrubbing it clean!) (epicurious.com)