The ultimate makeover: chocolate brownies - Good Food Middle East

Ingredients

• 85g dark chocolate, 70% cocoa solids, chopped into small pieces
• 85g plain flour
• 25g cocoa powder
• ¼ tsp bicarbonate of soda
• 100g golden caster sugar
• 50g light muscovado sugar
• ½ tsp coffee granules
• 1 tsp vanilla extract
• 2 tbsp buttermilk
• 1 egg
• 100g mayonnaise (I used Hellman's)