In a saucepan, combine raisins, 3/4 cup sugar with 1 tablespoon flour and 1 cup boiling water. Cook until thick. Let it cool completely before using as a filling for cookies.
Whisk flour and baking powder together.
Cream together butter and sugar. Stir in egg. Add milk alternately with flour mixture. Roll very, very thinly. Cut with a cookie cutter and spread one cookie with filling. Place another cookie on top to make a sandwich, pinching edges together.
Bake in a 325°F oven for about 10 minutes, or until lightly golden.
Submitted by: CM