Cake with Apricot Marmalade

Description
In Romanian: Prajitura cu marmelada de caise This cake is even tastier after a day or two.

Ingredients

 * 4 yolks
 * 1 cup sugar
 * 1 cup sour cream
 * 1 cup melted butter (tepid)
 * ½ teaspoon baking soda
 * 1 teaspoon vanilla
 * flour as needed
 * marmalade
 * vanilla flavored confectioner's sugar

Directions

 * 1) Mix the yolks with the sugar, add the sour cream, vanilla and baking soda, then tepid melted butter and mix well.
 * 2) Add flour and knead a medium soft dough. Divide into 3 equal parts and roll each one into sheets the size of the baking sheet.
 * 3) Place a sheet in, spread a layer of marmalade, cover with the second sheet, spread another layer of marmalade and then cover with the third sheet. Bake, first at low temperature, then increase it.
 * 4) After it has cooled off, cut into rectangles and sprinkle with vanilla flavored confectioner's sugar.