Sieve the flour, salt and powdered sugar in a bowl.
Make a hole in centre and add egg and vanilla essence.
Mix it with a fork till incorporated.
Cut the butter in cubes and add to the flour.
Slowly mix with hands till it resembles breadcrumbs.
Work with the butter and flour and make a dough.
Wrap this dough in cling film and refrigerate for at least 2 hours.
Take out from fridge and roll it into 1/8 inch thick.
Cut the base and a cutout top for each cookie in your desired shape.
Re roll and cut the dough straps .
Bake the cookies in a preheated oven at 180 degree Celsius for 12-15 minutes until they are just set and brown around the edges.
Let the cookies cool then dust the cutout top with powdered sugar.
Spread half tsp of strawberry jam on the base .
Place the sugared top gently on the filled base and press together.
Let the cookies sit for few hours for the sandwich to set and then serve.
