Shout out to the GOAT of the cookie world: Danish butter cookies. The more butter a cookie has in it, the better it is. That's plain and simple. Those Danish butter cookies get dangerous though. You could end up eating a whole tin as long as you have something to drink with it. If not you might end up with some cookie cement in your throat. I'd be OK with dying from overdosing on Danish butter cookies. That's a good death.
The other great thing about them is that they make great storage. Most of the time you see people use them for sewing kits. Sew what? Hehe. But really, it sucks when you want a cookie but get a handful of needles and yarn. Then again, if you're just jamming your hand into a cookie tin without looking, that's on you.