With the Caramel Cookie Taste of Twix. 8x9 Inch pan size. Satisfy your sweet tooth in the Duncan Hines Candy Shop! How could you possibly make rich, fudgy Duncan Hines Brownies better? How about adding your favorite candy? Duncan Hines Candy Shop brownies make it easy to indulge yourself in chewy, chocolate treats. So go ahead, create your own. It's Duncan Hines.