I would do that, but I read the bars at 2x2 traditionally, and my mold width is 3.75, so I'd be a little short when cutting. I think I'd rather use an 8x8x2 pan (or something evenly divisible by 2). I have a brownie pan like this, but it bevels inward at the bottom. So I am thinking about just lining cardboard or building one if cardboard wouldn't work for some reason.