Sift together flour and corn flour.
Beat butter and powdered sugar till light and fluffy!
Add flour mixture into butter mixture. Add vanila essence bind a dough. Add 2tsp milk. Knead lightly. Cover it in a cling film and keep it in the fridge for 30minute.
Preheat oven to 185 degrees for 10 minutes. Bring out the dough and make 2 equal parts.Roll Part into a thick chapati and cut cookies with a star shaped cookie cutter. Cut a small round in the centre of half of the cookies. Place a small amount of jam on the flat cookies. Place another cookie on it with a cut in the centre. Take a small quantity of dough and flatten it in the centre with a tiny spoon or your thumb and create a depression. Fill it with small quantity of jam.
Roll out the second part of the dough into a chapati. Cut roundels. Place a small piece of coverture chocolate in the centre and cover it into a flat ball type cookie. Press a little.
Place all the cookies on a baking tray lined with butter paper and bake for 20 minutes
Remove from oven and cool them and serve. Store rest of the cookies in an air tight container, keep a parchment paper to separate cookies from each other
