Mary berry Ultimate S’mores Brownies

What do you get when you add graham crackers and marshmallows to an already decadent brownie recipe?….Definitely not just another brownie… You get a rich, chocolaty, ooey, gooey, go grab a cold glass of milk brownie! This is one brownie recipe you’ve got to try. I’m not calling them the Ultimate S’mores Brownies for nothing!I