Pre-Heat oven at 400 F
Grease 10” x 6” aluminium tray (or baking tray) with butter, place a butter paper of the same size over it and again grease the butter paper with butter. Keep aside.
Combine the eggs and sugar in a deep bowl, beat it with beater for 3 to 4 minutes until light and fluffy.
Add the plain flour and vanilla essence and mix gently.
Transfer the batter into the baking tray and bake it for 8 minutes. Keep aside to cool slightly. Once it is slightly cooled, loosen the sides of the cake using a sharp knife.
Sprinkle some sugar on a dry area, take out the cake from tray and put it over sugar surface.
Cut into equal portions using a sharp knife. Serve immediately.