Everyone loves these. Make them every Christmas. Give as a gift.
Incorporating butter directly into dry flour mimics pastry crust methods, coating gluten strands before hydration occurs. This technique prevents the crumb from becoming tough during the kneading stage. When mixing, beat the dough until moisture absorption is complete. The dough is ready when it ceases to stick to the sides of the mixing bowl or human hands. Chilling the dough overnight in the refrigerator slows yeast fermentation while solidifying the butter fats, making the dense mass far easier to roll out thin the following day.
Grinding walnuts to a fine powder ensures the filling distributes evenly without tearing the delicate pastry layers. Roll the chilled dough on a dry board without adding extra flour, maintaining a thickness comparable to standard pie crust. Brushing beaten egg across the exterior surfaces promotes Maillard browning in the oven. Bake the formed rolls at 350 degrees Fahrenheit for 30 minutes until golden brown, then allow them to rest before slicing.
Pair these rich pastries with unsweetened black coffee or sharp black tea to balance the high sugar content of the walnut filling.