Here's how it goes:
About 2 months before you want to make these cookies, buy a box of raisins (2 cups at least) and open the container. Every time you are in your pantry, shake the box so the raisins dry out into little pebbles. (I have at times also put the raisins into a bowl. the nice part about this is that it is a great recipe if you find already dried out raisins in your pantry.)
Next, about one week before you want to make these cookies, move raisins from the box into a container that has a fitting lid. (A mason jar or tupperware works well.) Cover raisins completely in RUM. I prefer dark rum, and I stir/check on the raisins every day or so, making sure they are completely covered in liquid.
*** It's a bummer that the takes some prep time, but these cookies are so worth it!!!! I suppose you could also dry the raisins out in your oven, then soak them, but I have never tried.
After the rasins are good and soaked (yum!), whip up a batch of your favorite dough for chocolate chip cookies, omitting the chocolate chips, of course!
Drain the raisins, then mix into the dough instead of the chocolate. Bake according to recipe instructions.
These cookies are so good, I had to stop making them.