Any type of apple will work with this recipe – bonus points if you picked it fresh from an apple orchard! I prefer empire apples because they have the best combination of tartness and sweetness, but granny smith is a popular choice for caramel apples as well. You want an apple that has a bit of a bite to it, not a subtle sweet flavour like a red delicious, so watch what you choose. You don't want the caramel to overpower the apple!