The is a recipe for a Hungarian Kifiles (KEE-flees). We have them every year and only at Christmas. My grandma used to them very tiny, but my mom and I haven't been able to master that so ours tend to be more of a "two biter". They are light, flaky and not overly sweet. We make them with both prune or apricot lukvar, but I like the prune the best. These are the kind of cookies that will cause folks to hover in the kitchen and risk a burned mouth to eat them hot out of the oven. Consider yourself warned :0)
2 C Butter
4 C Flour
4 Egg Yokes
1 C Sour Cream
Prune or Apricot Lukvar (located in the store with pie fillings)
Combine ingredients, divide into 5 balls of dough and chill overnight. (If you are not going to make the cookies up the next day, put the dough in the fridge as it will turn gray if left in the fridge too long)
Roll the dough out thinly and then cut into squares (the more even the squares, the easier to roll them)
Put a small dollop of filling and roll up like a crescent roll.
Brush with egg white and bake 20 minutes at 350.
As soon as they come out of the oven dust with powdered sugar and let cool. Once cooled, sprinkle again.