I made the dough exactly and chilled! The dough was crazy yummy btw. It tastes like the inside of a Reeses Cup. I used peanut butter cups based on a review but I think the dough had plenty of peanut buttery flavor. I also made some with Hershey Kisses on top (instead of the pb cup). I usually under bake my cookies but liked these best cooked until brown. I think due to all the butter, sugar, and peanut butter they taste too greasy underbaked. I accidentally cooked some too long and they're very dark, but still nice and chewy not crunchy at all, even the next day. I don't think you can over bake them until they're burnt. The only downside is the are crazy rich. After one cookie, I'm done.
LOVE these cookies!! Also the dough is fantastic without anything added in. Just a great peanut butter cookie, period. I also made some with chocolate chips instead of the candy bars and WOW....yumminess! Love that the dough keeps well in the fridge, too.