Confectionery base: how to make the chocolate pie #dough

THE CHOCOLATE PIE DOUGH INGREDIENTS: 2 yolks - 130g of butter (1 + 1/4 sticks) - 200g of all-purpose flour (1 + 1/2 cups)  - 20g of cocoa powder (1/4 cup) - 100g of icing sugar (1/2 + 1/3 cups) / Some Nutella for the cookies