Sift the flour into a large bowl for the dough. Add the butter cut into small cubes, the egg, sugar, and salt. Knead into a soft dough and refrigerate for 30 minutes wrapped in plastic wrap.
Roll out the dough to a thickness of 1/2 cm and cover a 22 cm pie dish. Prick the bottom with a fork. Line the dish with baking paper and fill it with beans, rice, or pie weights. Bake for 10 minutes in a preheated oven at 180 degrees.
Let it cool. For the filling, beat the eggs with the pumpkin puree. Add the sugar, cream, and spices. Whisk until smooth without lumps.
Pour the filling into the crust and bake for another 30 minutes at 160 degrees. Decorate as desired with nuts, caramel, and cookie crumbs.