In a large bowl, mix/knead the flour, baking powder, 125 g (4.5 oz) sugar, soften butter, egg yolk and sour cream. Keep kneading until the dough has a uniform consistency.

Place the dough in the fridge for about 15 minutes. This will make it easier to roll it out in the next step.

Take 2/3 of the dough and roll it out to a flat plate and place it in a greased pie dish with a diameter of about 22 cm (8.5 inch). Make sure the dough is covering the entire bottom and the sides of the pie dish. The last 1/3 of the pie dough is saved for later.

Chop the almonds and mix them with 25 g (1 oz) sugar and the cinnamon.

Peel the apples and slice them. Place the sliced apples at the pie bottom and sprinkle the almond/sugar/cinnamon mixture on top.

Roll out the last piece of pie dough into a square. Use a knife to cut the dough into long strips. Decorate the top of the apple pie with the strips - we like to make a grid but that's up to you.

Turn on the oven at 200 C (400 F) and bake the apple pie at the oven's middle position for about 15-20 minutes.

When done, let the pie cool off a bit before serving it.