Roast Pumpkin at 160℃ for 40 minutes or until flesh is soft. Allow to cool.
Melt Butter in a saucepan on medium. Allow it to turn brown. Pour into mixing bowl and allow to cool completely.
Once butter is cool add both sugars and golden syrup to butter and stir until combined.
Add mashed pumpkin and stir until combined.
In a separate bowl and all dry ingredients and mix. Then pour 1/3 of flour into the butter mix. Fold through and another 1/3 and then fold the last 1/3 of flour.
Add chopped dark chocolate and walnuts into the dough.
Cover bowl with cling film and chill in refrigerator for 1 hour.
Preheat oven to 170℃.
Using a 2 tbsp ice-cream scoop, place on a lined baking tray. Bake for 9 minutes.
Cool completely on tray before moving them to a container. Last a week in the refrigerator.