01 -
Preheat the oven to 175°C and line baking sheets with parchment paper.
02 -
Using a mixer, beat the softened butter with granulated sugar and brown sugar until light and fluffy, about 2 to 3 minutes.
03 -
Add the large egg and vanilla extract to the creamed mixture and beat until fully integrated and smooth.
04 -
In a separate bowl, whisk together the flour, cocoa powder, baking powder, and salt until evenly mixed.
05 -
Gradually fold the dry ingredients into the wet mixture, stirring gently until just combined.
06 -
If desired, fold in chocolate chips, chopped nuts, and a pinch of espresso powder at this stage.
07 -
Scoop approximately 30 g (2 tablespoons) portions of dough onto the prepared baking sheets, spacing them about 5 cm apart.
08 -
Bake in the preheated oven for 10 to 12 minutes until the edges are set but the centers remain slightly soft.
09 -
Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.