I am going to be painfully honest and tell you that this was a last-minute thing. Tasked with making dinner and a dessert for a birthday celebration in just a couple of days, plus dealing with high temperatures (and the accompanying avoidance of oven usage), I slummed it and used a boxed brownie mix. This was mostly because I wasn’t sure if it was going to turn out edible or attractive, and I couldn’t deal with the emotional defeat that comes with spending extra time making something that doesn’t turn out. So I bought 2 boxed brownie mixes. One to try in the waffle iron, and one to bake in a standard pan should the waffling experiment not turn out. If it is useful to anyone else, I used ghiradelli brownie mix. It had a lot of surface area, so everywhere was just like eating a corner.
I topped it with about half a recipe of my standard chewy caramel and then topped that with toasted cashews (I’d have gone for macadamia nuts, but I couldn’t find them!) It was pretty tasty served with a scoop of vanilla ice cream.