Cream the butter and sugar together and add the eggs, sour cream, and the flour sifted with the baking powder and soda and the vanilla. Put half ot the batter in a well buttered tube pan. Sprinkle half of the filling mixture and about ½ cup of raisins over the batter. Pour in the remainder of the batter and sprinkle it with the rest of the topping. Bake in a 350 degree oven for 35 minutes, or until done.