"Æbleskiver (Danish meaning apple slices in English (singular: æbleskive) are traditional Danish cakes, somewhat similar in texture to American pancakes. Æbleskiver are cooked in a special æbleskive pan, a cast-iron pan with several hemi-spherical indentations in the bottom of the pan. Batter is poured into the indentations and as it begins to cook it is flipped with a skewer to give the cakes their characteristic round shape."
They were traditionally cooked with bits of apple (æble) or applesauce inside but these ingredients are not normally included in modern Danish forms of the dish. Æbleskiver are not sweet themselves but are traditionally sprinkled with powdered sugar, accompanied with raspberry or sometimes strawberry jam.
But really, there is so much more you can do with these pans. One of our favorite things to do is make little pancake balls. Just get your normal pancake mix and fill the round cups to the top of the cup, wait for them to brown on the one side and then flip them over to cook the other side. When they are done you can put any of your favorite toppings on them and enjoy.