In a mixing bowl whisk together the browned butter and both sugars. Feel free to use melted butter if you don't want to brown it.
Add in the vanilla extract, salt and egg and whisk until combined.
Add in the chocolate chunks and chopped walnuts and mix until combined.
Sift in the plain flour and baking soda and fold until you get a thick cookie dough.
Scoop the cookie dough with a medium sized ice cream scoop (50g) and place onto a baking tray lined with baking paper.
Top with cookie dough balls walnut and chocolate pieces and then refrigerate for at least 30 mins.
Bake in a pre-heated oven at 180°C for 12 mins and then allow to cool slightly before tucking in.
