This article is from the Bulgaria FAQ, by Dragomir R. Radev email@example.com with numerous contributions by others.
Ingredients: 8-10 eq. sized apples, 1/3 cupful walnut kernels, 3/2 cupful
sugar, vanilla, cinnamon according to taste, 50g butter. Peel and carefully
hollow the apples. Prepare a stuffing from the beaten butter, 3/4 cupful
of sugar, crushed walnut kernels and cinnamon. Stuff the apples and place in
a lined dish, pour over 1-2 spoonful of water and bake in a moderate oven.
Serve cold, sweetened with syrup made from cupful of sugar, 1 cupful of water
and vanilla. The same recipe may be used for quinces and pears.
(My grandma used to make them the best, may God bless her).