As for a breakfast type cookie, there are companies out there that do make "muffin tops" - remember the Seinfeld episode? And I've seen muffin top pans available in cookware stores - SWW?
We sell regular muffin tins, twelve muffin cups per tin. We sell mini-muffin tins, twenty-four muffin cups per tin. We sell Texas-size muffin tins, six muffin cups per tin.
And we do indeed sell the tins for making "muffin tops," again six per tin. They come out the same size across as the Tesas-style muffins, but with a much shallower muffin.
Exactly how this works, I'm not sure. I'm not up to speed on muffin making. I'm pretty sure the poof to the muffin is because of the leavening, but whether this is cause by baking soda or baking powder, and whether the amounts of either has to be changed from a regular muffin recipe, all this is wierd science to me as of yet.