Preheat oven to 180 degrees.
Beat 200g of butter with 1 cup of brown sugar, 1 cup of white sugar and 1/2 a teaspoon of vanilla essense until pale and creamy.
Add 2 eggs and beat until mixed.
Add in 3 cups of plain flour, 1 teaspoon of baking powder, a pinch of salt and 2 cups of chocolate chips.
Mix everything together. Roll mixture into balls and place on lined baking tray. Flatten slightly with a fork.
Bake for 10-12 mins, until lightly browned around the edges.
Leave to cool for a few minutes before eating.