@mattersource mentioned Thin Mints. How could I have forgotten them? But I also love Pepperidge Farm Milanos.
I bake damned good cookies, but I think I could live without them.
If I had to pick just one, probably the regular dark chocolate Milano cookies.
I would choose the type of cookie I used make from a secret no-bake family recipe invented by my ex, improved by me. They are made from organic rolled oats, baker's chocolate, shredded coconut, farm butter, crushed walnuts, whole grain buckwheat, vanilla, etc and is so delicious people used to beg to get bags of them for Christmas presents.