Take butter and castor sugar in a bowl and mix it well, until the sugar is almost dissolved in butter(Electric beater can also be used).

Then put 3 eggs one by one and keep mixing it.

Then add flour and vanilla essence and fold it with soft hands.

Take a cake mould and put a butter pepper on and grease it with butter and pour mixture into mould

Put your mixture into the oven and bake 180 degree around 40 minutes or till toothpick comes clean.