Method

1. In a medium sized bowl, whisk together the flour, baking soda, baking powder, and salt. Set aside.
2. In a large mixing bowl, add the melted and cooled butter, brown sugar, and sugar. Whisk vigorously for 1-2 minutes until it turns into a paste-like consistency.
3. Whisk in the egg and vanilla until smooth.
4. Pour in the dry ingredients and use a rubber spatula to fold to combine. Leave a few streaks of flour and pour in the chocolate chips. Continue to fold the dough until the chocolate chips are dispersed and the flour is completely blended in. Do not over mix.
5. Divide the cookie dough into 10 pcs and flatten them slightly on a lined baking sheet and bake at 170C for 9-12 minutes.
6. The cookies are ready when they have a golden ring around the edge but are pale and puffed in the center. The cookies will continue to bake outside oven and will slowly flatten and settle as they cool. Let the cookies cool for about 20 minutes before eating.