Let's start with the pie crust. Crumble the butter with the sugar and the flour together with your hands.
Add the egg yellow and mix together to a big ball.
Cover the bottom and half of the edges of a pie form with the pie crust. Place in the ringer for 30 minutes.
In the meantime prepare the filling.
Peel and cut the pumpkin in pieces.
Place the bites in a casserole, cover with water and ass 1 pinch of salt. Boil for 5 minutes.
Pour away the water. Let the pumpkin bites rest for 5 minutes.
Preheat the oven at 200 degrees Celsius.
Add the eggs one by one to the pumpkin bites and mix with a hand blender.
Add the heavy cream, sugar, cinnamon powder and flour and mix well.
Take out the pie crust from the fridge and pour in the filling.
Place in the lower part of the oven for 40 minutes.
Take out the pie and let it cool down.
Place in the fridge overnight.
Whip the cream together with vanilla sugar and decorate the pie according to the occasion.