Wow, this is a traybake of dreams! Imagine this… buttery shortbread, goey caramel, salty pretzels, and a drizzle of chocolate. They all combine in this recipe to make a delicious treat. Caramel shortbread (or millionaire’s shortbread as I knew it growing up) can be really sweet, but the pretzels stop this becoming too sickly. Make it yourself if you don’t believe me!