Use a food processor or your hands to crumble the cold butter with the flour, sugar and salt. Add 2/3 of a whisked egg to the mix. Use the other 1/3 for brushing the pie at the end, before it goes into the oven.

Knead the dough until it sticks together. Add a little water or milk until the dough holds together. It still can be a little crumbly. Cover with plastic and let it rest in the refrigerator for about 30 minutes.

Peel the apples and slice them in thin slices. Mix with the brown sugar, raisins and custard powder. Set aside.

Preheat the oven 350 F (or 180 C).

Grease a 9" pie dish with removable bottom. Roll out 2/3 of the dough to cover the bottom and sides of the pie dish. You might need to add some of the 1/3 part of the dough. Sprinkle the bread crumbs over the bottom. This will absorb the excess juice from the apples.

Spread the apple slices over the dough, without the juice. Use the rest of the dough to make a grid over the apples. Brush the rest of the whisked egg on top and bake for 1 hour. 

Let cool, serve with ice cream, a dollop of whipped cream or just some powdered sugar and SMAKELIJK ETEN!!!