• Preheat the oven to 350 degrees F or 180 degrees C for at least 10 minutes.
• Line a baking sheet or cookie tray with parchment paper or butter paper.

Making eggless jam cookies:

• Take all purpose flour, cornstarch, lemon zest and baking powder in a bowl.
• Mix well using wire whisk.
• Take soften butter in a bowl. Beat it using wire whisk till it smooth and creamy.
• Add white sugar. Beat it again till sugar is dissolved. It should be smooth and fluffy.
• Then add dry flour mixture. Mix it with wooden spoon. It will be crumbly.
• Now start adding 2 tablespoon of milk. Start kneading the dough. It should come together.
• Now divide it into 18 equal portions. Make smooth balls.
• Arrange them on prepared cookie sheet.
• Now make hole in the center. I have used the handle of the wooden spoon. You can use your finger as well.
• Fill it with the jam. I have used strawberry jam.
• Bake into preheated oven for 15 minutes. You will it starts to get some color around the edges.
• Let the cookies cool on sheet for 5 minutes.
• Then remove it to a cooling rack. Let it cool completely.