Mix the softened butter and icing sugar finely in a bowl using a spatula.

Add an egg and vanilla essence to it and mix it thoroughly.

Now add flour to this mixture and blend it in nicely using the spatula until it turns into a soft dough.

Take a very small quantity of the dough, roll it into a small ball, place it on the baking tray lined with butter paper and insert your thumb into the dough ball for a deep impression. (Make as many biscuits as you desire from the dough, Normally it makes around 25 biscuits)

Now take your favourite jam and pour a small quantity of it in the deep thumb impressions in the biscuits. Bake them for 20-25minutes in an oven on medium-low heat.

After 20-25minutes take out the biscuits from the oven onto a cooling rack to cool them down.