Chocolate chip cookies - Mitchell Kember

Ingredients

• 1 cup butter
• 1/2 cup white sugar
• 1 cup brown sugar, firmly packed
• 1 tsp vanilla
• 54 g beaten egg (from 1 to 2 eggs)
• 2 1/4 cups flour
• 1 tsp baking soda
• 2 tsp salt
• 6 oz chocolate chips