Joe made these!
There’s been an image floating around Facebook that uses pre-made chocolate chip cookie dough, PB cups, and brownie batter in a brownie pan to make square-shaped baked goods. We can’t use the premade stuff (see also: usually full of gluten) but he made a version we can have, using a muffin tin.
It was glorious.
If you’re wanting to do this yourself, bake at 350 degrees for 18 minutes. Use any cookie dough, pb cup (I wonder if you could do this with Rolos and get a caramel center?), and any brownie batter. Then revel in the tastiness.