Mix all the above ingredients and cook until thick but be sure to stir to prevent burning. Cool before putting onto the cookies.
Dough:
Cream the sugar and shortening. Add the beaten egg and milk.
Into this creamed mixture, sift the flour, salt, and baking powder. Add the vanilla and mix well.
Roll out dough on floured surface until thin and cut with round cookie cutter or canning jar ring.
Assemble and bake cookies:
Drop a tablespoon of the filling in the center of the rounds and top with another cookie round. Crimp the edges with a fork by pressing the two rounds together.
Puncture each cookie with a fork to allow steam to escape while baking.
Bake in a 350 degree oven for 15 to 18 minutes on a parchment paper lined cookie sheet.
Notes
Don't like raisins? Use cranberries or dried blueberries.
A regular size canning jar ring is a perfect size for the circles.