The instant review is, definitely too flat, like half the size a brownie should be, and they're too gooey but I've not had them from the fridge yet. Taste pretty good, I'll give it a 6/10
Nah done right they're good at all temperatures (my partner makes the nicest brownies I've ever had, can't imagine a situation where I wouldn't just shove them into my face like a gobshite cartoon cat).