These are from a brownie mix.
I did add 1/4 tsp sea salt, a pinch of instant yeast, 1/2 tsp instant coffee, 1/4 cup of chopped pecans and ~2 oz of chopped dark and milk chocolate.
It came out great!
I’ve been wanting to make 100 Hour Brownies but I’ll test them at 24 hours for the next mix.
Ha, sorry, no, I was making a bad dad-joke. “Cast iron brownies” makes it sound like the brownies are made of cast iron :)
(And I love making them this way tbh, the sides and bottom are extra crunchy and you get to cut yourself a slice of brownie instead of a brick!)