Jam cookies (Eggless)

Recipe Source : here
Makes 15 to 20 cookies
Ingredients:
Maida/APF- 3/4 cup
Custard powder(vanilla)-3/4 cup
Corn flour - 4 tbsp
Butter - 1/2 cup 
Icing/powdered sugar- 1/2 cup
Yogurt -  3 tbsp
Vanilla extract- 1/2 tsp
Mixed fruit jam for filling or any jam of your choice

Method:

1.Cream the butter along with the powdered sugar.
2. Add vanilla essence to it.
3.Then add Maida , Custard powder , corn flour and yogurt to form a smooth dough.
4.Roll out the dough to 5 mm thickness and cut with the cookie cutter.Make a thumb impression and fill it with the jam in the center
5.Place the biscuit in a greased baking tray and bake the biscuits in a preheated oven at 180c for 15 minutes or till done.