Cook raisins with sugar and water for 10 to 15 minutes, or until thick, stirring occasionally. Remove from heat and add lemon juice and butter. Let cool while preparing dough.

Cream sugar and butter; add egg and mix well. Combine flour, baking powder, and salt, and add alternately to sugar mixture with milk and vanilla extract. Roll out a portion of the dough to ⅛-inch thickness and cut into rounds with a biscuit cutter. Place a teaspoonful of filling on the center of a round, then cover with another round and press edges together. Bake at 350 degrees F until golden brown (10 to 15 minutes).