Chefs & Cooks, help me please?

My family and I bought a six-pack of Hershey Triple Chocolate Chunk brownies from Costco a few months ago. However, since there was only one bag left, someone threw away the box. So, basically, I'm wondering if anyone has a recipe for how to cook them (ie, how many eggs, cups of flour) or maybe what the average brownie recipe calls for? And do you think they'll be expired already? Thank you. (;