Halloween pumpkin chocolate brownies with spiderweb ganache

Ingredients

• 3/4 cup plain flour
• 1 cup caster sugar
• 1/4 cup Dutch baking cocoa
• 1/2 tsp salt
• 1 tsp baking powder
• 1/2 cup coconut oil
• 2 eggs
• 1 teaspoon vanilla extract
• 1 cup plain flour
• 1 tsp cinnamon
• 1 tsp baking soda
• 300g fresh pumpkin (we used butternut pumpkin)
• 1 pinch of tumeric (optional)
• 70g dark chocolate, finely chopped
• 1/4 cup heavy cream
• 2 cups icing sugar
• 1/2 cup butter, room temperature
• 1 tbsp heavy cream
• 1 tsp vanilla extract