Prepare all ingredients. Preheat the oven to 180°C.
Cut the butter into arbitrary small cubes. Some of the butter will go into the dough, and some will go into the streusel topping.
Sift the flour into a deep bowl, add sugar and 180 g of butter. Grind all the ingredients with your hands until crumbly.
Add a chicken egg to the butter-flour crumbs. Mix everything until smooth.
Knead the dough until it becomes elastic and does not stick to the sides of the bowl. Form the dough into a ball and wrap in cling film. Place the dough in the freezer for 15 minutes.
Meanwhile, prepare the nut streusel or topping. To do this, chop the walnuts with a knife.
In a deep bowl, combine the flour, remaining butter, cane sugar and chopped walnuts. Rub everything with your hands until it turns into crumbs. If the streusel is too wet, add a little more flour.
Remove the chilled dough from the freezer and roll it out. Place the dough into the pie pan to create a border. A special metal pan with removable sides is very suitable for baking. There is no need to grease it, because the dough is already quite oily. Place raspberries and then streusel on top of the batter. Place the pie in the oven for 40-50 minutes.
Cool the finished pie slightly and remove from the mold. Garnish the dessert with fresh raspberries and powdered sugar if desired.
Shortbread pie with raspberries is ready. Bon appetit!