In my head, I keep calling these "fireworks cookies," although maybe they don't exactly look like fireworks.
What we have here are three-layer cookies (decorated on one side), with mini M&Ms exploding from the center. OK...they don't explode...now THAT would be cool. They are, however, a festive surprise when you bite into, or break off a piece, of these patriotic cookies.
The idea comes from the pinata cookie. Yes, THE pinata cookie. If you've been on Pinterest at all in the last two years, I guarantee you've seen it. It's pretty darn brilliant.