Vinarterta (Icelandic special occasion cake)

This is a special cake from Iceland which in some families is only made at Christmas.
As they say in Iceland: Hafið góða skemmtun (
Enjoy a sweet Celebration).
- from ...
Filling
2 lbs. prunes, cooked 1 cup sugar
½ cup prune juice ½ tsp. cardamom seed
¼ tsp. salt1 tsp. vanilla extract
Dough
1 cup of margarine4 cups of flour
1½ cups sugar ½ tsp. of salt
2 eggs2 tsp. baking powder
1 tsp. vanilla extract ¼ cup of milk
Filling
Use packaged prunes, cover with water and cook slowly for 45 minutes.  Drain prunes, save liquid.  Cool remaining prunes and pit.  Put pitted prunes trhough food grinder.  Add juice, sugar, cardamom to prunes (use rum or whiskey and salt).  

Dough
Cream butter or margarine, add sugar gradually, until creamy.  Beat eggs slightly, then stir eggs and vanilla into creamed sugar.  Sift flour, salt and baking powder and add to batter.  Add milk to batter mixture.  THe dough should be firm and stiff.  Chill in refrigerator.  Set oven to 350°.  Bake cake on bottom of pan.  Divide into 7 portions, roll it very thin, bake 20 minutes or until brown.  Create a layer cake by spreading the filling on one layer and covering with another until all 7 dough layers have been used.