Ultimate Fairtrade chocolate cake (V) - Chelmsford Star Food

Ingredients

• 80g Co-op unsalted butter, plus extra for greasing
• 400g Fairtrade caster sugar
• 150g bar Co-op Fairtrade dark chocolate, chopped
• 2 tbsp Co-op vegetable oil
• 1 tsp vanilla extract
• 2 large Co-op British eggs, beaten
• 225g Co-op plain white flour
• 30g Fairtrade cocoa powder
• 1 tbsp baking powder
• 2 tsp bicarbonate of soda
• 300ml Co-op double cream
• 2 x 150g bars Co-op Fairtrade dark chocolate, chopped