¾ cup (190g) salted butter, cubed
1 + ½ blocks (150g) 70% dark chocolate, chopped into small pieces
3/4 cup (135g) brown sugar
1 cup (165g) castor sugar
2 large eggs, at room temperature
2 tsp vanilla extract
1 cup (120g) almond meal
½ cup (55g) dutch processed cocoa
1/3 tsp fine salt
1 tsp coffee granules/espresso powder (optional)
1 x 110g golden walnuts, roughly chopped