How to make
Melt the butter in a pan, arrange the biscuits on top. Chop the apples into pieces and then sprinkle them with cinnamon and chopped walnuts.
Finally, top it with sponge dough (made from the beaten eggs, sugar, flour, baking powder), bake in a preheated 480°F (250 °C) oven. Sprinkle the ready biscuit apple pie with powdered sugar.