Kefflies

Yield: 5 To 6 Doz.   Pastry: 4 Cups Flour Filling: 1 Lb Finely Chopped Walnuts 1 Lb Butter 3/4 Lb Powdered Sugar 1/2 Pint Sour Cream 4 Egg Whites 6 Egg Yolks 3/4 Tsp Vanilla Extract   Pastry: cut butter into flour. Slightly beat eggs yolks and stir insour cream. Add the egg mixture to butter and flour, stir throughly. Form dough into balls the size of walnuts. Chill balls at least three (3) hours or overnight. After dough is chilled, roll out on well floured pastry board till very thin. Place filling place filling on top and roll into cresent shape. Bake on ungreased cookie sheets at 375 deb. For 12 to 15 minutes. Let cool a few minutes then dust with powdered sugar.   Filling: beat egg whites till stiff, add remaining ingredients.