1. Mix the butter and both sugars until thoroughly combined! If you don’t want to use an electric mixer, a whisk will do just fine as we just have to combine.
2. Mix in the vanilla and the egg until thoroughly combined.
3. Sift in the flour, baking soda, baking powder, and salt. And add the chocolate chunks and walnuts. Mix with a spatula until everything is combined and the cookie dough is formed.
4. Cover with a cling wrap and refrigerate for 1 hour.
5. Preheat your oven to 180℃/350℉ and line a baking tray with parchment/butter paper.
6. With the help of a spoon or scoop place cookie dough on the baking tray 1-2 inches apart from each other. Place a few extra chocolate chunks on top of each dough ball.
7. Bake in the oven for 8-10 minutes or until cookies have achieved a slight golden brown colour.
8. Once baked, let them sit in the pan itself for 10-12 minutes before transferring to a wire rack to cool completely.
