"We go together" reads the top...
and opens sideways to reveal "like milk and cookies..." All images and greetings here are from the "Have A Cookie!" set :)
The card above uses the design you see on the right below. To make this one, take your largest scalloped circle Nestabilitie and lay it just a bit over the score of a folded 4 1/4" square card and run through your die cutter. Now you have two scalloped layers that are attached. Cut out smaller classic circles in brown and white, layering the white circle inside for your "cream filling" and emboss a texture on the smaller brown circle (here Cuttlebug Textile folder) and adhere to top of card.
The design on the left is a "twist off" just like you may (still!) do with your Oreos! (True Story(NSR): when I was little I was at my mom's friend house, and she told me I could help myself to the cookies while the two of them visited. Well! "Help myself" meant to open every Oreo in the brand new family size pack, eat the filling and put the cookies back in the bag!! Boy, did I get in trouble!! I was such a rascal!!!*) Here, create two separate Chocolate Chip scalloped circles, and do the same as you did in the the other design for the inside and out layers.
Once you've added your embossed top to the outside, and "cream" to the inside, hold them together and punch with your 1/16" circle through all the layers near the edge and insert your brad (Antique Brass) Now twist to reveal a greeting you've stamped inside!
As you can see I adhered two layered SU! punched ovals to both cookie tops with greetings from my set. Aren't these fun? (Don't they look almost as good as the real thing??) :) I plan to make these on occasion to throw in my son's lunch box as a surprise :) (maybe Dh's briefcase...? ! maybe send to that friend of my mom's?? "Remember me??" BWAHHH!!! ;)
*check me out at age 4, see that sly grin...? (I'm up to something!!)