These eggless custard thumbprint jam cookies are a delightful treat that everyone can enjoy. The cookies have a buttery and crumbly texture, with a sweet and tangy jam filling. The custard powder adds a unique flavor and richness to the cookies. They are perfect for afternoon tea or as a snack. These cookies are easy to make and can be stored in an airtight container for up to a week. Serve them with a cup of hot tea or coffee for a delicious treat.