I love the salty/sweet combo and thought I would google and see if there was a similar recipe out there that I could try. I hit paydirt on the first site and found this recipe. It's not her recipe, but the recipe of someone attempting to recreate the cookie.
They were very easy to make. The recipe calls for 1/2 cup of rice flour, but I just used all-purpose and it worked just fine.
If you make them, don't skimp on the salt on the top. I did not lightly sprinkle. I dumped some Kosher salt on a plate and pressed the cookie top into the salt. Then I pressed it down with the bottom of a measuring cup. Like this
After a little more searching, I found the website where you can purchase the real thing. The cost? $14.95 + shipping for 6 cookies. WOW! One batch made 18 large cookies for me. If you want to buy them you can find the site from FoodTV.