Have you ever tried to make a gooey caramel center for millionaire shortbreads when it's 90+ degrees and humid out?
I have. Pro-tip: Don't fucking do it.
To be fair, the millionaires came out fucking delicious. But getting the caramel to set took far longer than it had any business taking.
If you are unfamiliar with millionaires, they are a shortbread crust topped with a layer of caramel and then a layer of tempered chocolate. Devilishly simple, extremely tasty - and this recipe is one of the first ones that inspired me to try out some GBBO bakes.