In a bowl; beat together the eggs, sugar and vanilla essence.

In a separate bowl, mix together the butter, flour and baking powder. Mixture must be crumbly.

Mix together the two mixtures together and let it stand for about 5-10min in room temperature or put it in the refrigerator for about 30min.

Preheat oven to 190°C.

Roll dough into rather small balls and place on baking sheet. Make sure that there is enough space between each ball, since the self-rising flour shall let the cookies rise rather largely.

NOTE: after the cookies are taken out of the oven and it's still soft, don't put it back into the oven, since it shall harden when cooled down.