Turn the oven 180 degrees.
Grease muffin molds with butter.
Mash the halva with a fork. Pour the raisins with hot water for 5 minutes, then drain the water, dry the raisins and mix with a pinch of flour.
Grind margarine with sugar, vanilla sugar, salt and halva. Add eggs and sour cream, pour in milk, mix, add soda and sifted flour, mix well, then pour in the raisins, mix again.