Cookie Dough Made From Pie Crust
If you're located in a place where premade pie crusts are available, then you're located in a place where premade cookie dough should also be available. 
Pie crusts contain no sugar, no eggs, no leavening, no flavoring. Adding any of these things after the fact is likely to result in a tough, uneven mess of a cookie. I wouldn't suggest it.
If you already have the pie crusts and need to use them up (for something other than pie), you can try rolling out the crusts pretty thin, cutting them into wedges, frying them, and immediately after they come out the oil, rolling them in powdered sugar. Serve with a nice fruit jam.