Step 1

Grease and line your 9 by 5 inch loaf pan with baking or parchment paper. Preheat oven to 180 C (350 F) standard / 160 C (320 F) fan-forced.

Step 2

In a large mixing bowl, sift together flour, cocoa, baking soda, baking powder and salt. Add sugars and gently stir.

Step 3

In the microwave, heat the butter in a large heatproof bowl until just melted, stirring in between 20 second bursts. Add your vanilla and eggs to your  butter and whisk gently until combined.

Step 4

Make a well in the middle of your dry ingredients, add wet ingredients along with buttermilk. Very gently fold the mixture using a spatula or wooden spoon until the mixture is just combined – be careful not to over mix. Add 75 grams (1/2 cup) of chocolate chips to the batter.

Step 5

Pour mixture into prepared tin and sprinkle extra 35 grams (1/4 cup) of chocolate chips on top. Bake for approximately 45 minutes or until a knife inserted into the middle comes out clean. Leave to cool completely on a wire rack.