Millionaire's Shortbread is such a popular sweet treat, but why not make it that extra bit indulgent by adding a layer of brownie in there too? When it comes to baking, two of my husband's favourite things I make are shortbread and brownies, which is where the idea for this recipe originated from. I wondered whether I could combine these two delicious traybakes into one seriously indulgent Brownie Millionaire's Shortbread. A few 'experiments' later and you have a buttery shortbread base, gooey chocolate filled brownie layer, smooth caramel and a thick layer of milk chocolate to top it all off. Certainly a treat and a small slice is more than enough; perfectly paired with a cup of tea if you ask me.