Melt the fat and let it cool down. Wash apples, cut out cores. Cut apples into slices of about 1 cm thickness. Sprinkle slices with lemon juice. Mix egg, sugar and salt.
Stir in buttermilk and liquid fat. Mix flour and baking powder and stir into the mixture. Spread a coated pan thinly with oil and heat it up. Put 4 tablespoons of dough as 4 round cakes into the pan.
Press one apple ring in the middle and fry on medium heat for 2-3 minutes on each side until golden brown. Remove from the pan and keep warm. Bake 4 more pancakes in portions from the remaining dough with a little oil.
Add the quark and cranberries.