Please post your best CHEWY brownie recipes that use cocoa powder.

Here’s the criteria:

Chewy almost like a chewy chips ahoy.
Not too fudgy or dense.
But not light and cakey either.
Also nothing dry.

I’m an edge guy. I like the kind where it’s slightly crisp on the edges, but chewy and moist in the middle.

It HAS to use cocoa powder and NO baking chocolate.

So please post your recipes or links to recipes you like.
Pictures a plus. And your personal description of the brownie itself.