Mix flour, butter, salt and caster sugar in a bowl with your fingers. Make the mixture like that of crumble, break in eggs and knead the dough

Spread some flour on flat surface and roll out the dough with rolling pin to your desired thickness (I kept rough measurement of 2 cm). Take the cookie cutters and cut the dough in desired shapes (I used heart and triangle shape).

Place the cut pieces on the prepared baking tray. Use the left over dough (usually the side trimmings from shapes) to make some round biscuits. Place chocolate chips on the heart shape biscuits, make thumb impression on the round biscuits and put some liquified jam in the center

Place in preheated oven at 170°C for around 12-15 minutes or when the biscuits start turning a bit brown. Cool them on wire rack.

To make the jam centered biscuits take the triangle biscuits and spread the liquefied jam and top with another same shape biscuit. Let them cool, dust some icing sugar and then transfer to air tight jar