An apple dumpling is a pastry filled with apple, cinnamon and occasionally raisins. Apples are peeled and cored, placed on a portion of dough, then filled with cinnamon and sugar. Then the dough is folded over the apples and the dumplings are baked until tender.
Apple dumplings are a native food in the northeastern United States, around Pennsylvania. A very common recipe among the Amish, it is often eaten as a breakfast item, but they are also a very common dessert item after meals. It's also popular to eat them with ice cream or in milk.
In the UK a suet pastry is often used, although shortcrust is also common. A filling of dates, sultanas or raisins is often inserted into the cavity left by removal of the core, and dark sugar is popular there too.