Chocolate apple pie

I love an apple pie, and with addition of chocolate that is already complete pleasure! I didn't have to think to much about this - there were all ingredients and willingness, as always! So, I got down to the work.
The end result - as expected. In addition, this stellar topping - the slowly approaching Christmas can already be felt.

Ingredients for the cake:

1.5 cups  flour
3/4 cube butter (150g)
0.5 cups sugar
2 eggs
5 tbsp bitter cocoa
2 tsp baking powder
2 tsp vanilla sugar
a few drops of vanilla extract

Sift and mix flour, baking powder and cocoa. Add soft butter to sifted ingredients and cream everything. Then add sugar (I added cane sugar), eggs, vanilla sugar and vanilla flavor - combine together all the ingredients and knead until you get a uniform dough. Divide the dough into two parts, the larger one for the bottom and the rest for the top of the cake. Roll out the larger part of the dough, lay into the tart pan (I used 27cm one) and put into the fridge for about 20 minutes. Roll out remaining part into 0.5cm thickness and then using gingerbread cookie cutters (I've used stars), cut the sprinkles.

Ingredients for a apple-chocolate custard:

4 large apples
1 tbsp butter
1 tsp cinnamon
2 tsp cocoa
1 tsp sugar
3 oat cookies (crushed)
half a bar of milk chocolate

Peel the apples and cut into cubes. In a saucepan, melt butter and then put half of the apples, sugar and cinnamon - simmer for a few minutes. When our apples soften completely, add the second half of the apples and cocoa. Stir everything and, at the end, add the chopped chocolate, however quickly take out from the heat, in order to not melt the chocolate.

Take out our chilled dough from the fridge, sprinkle with crushed oat cookies. Then spread the apple-chocolate custard and, in the next step, cover with our topping - the stars. Bake about 40 minutes at 160deg C. After cooling down it can be sprinkled with powdered sugar.