Double Fudge Cake with Chocolate Buttercream Frosting Recipe | Food Network UK

Ingredients

• 220g unsalted butter, at room temperature, plus extra for the tin
• 450g plain flour, plus extra for dusting the tin
• 200g good cocoa powder
• 2 1/4 tsp bicarbonate of soda
• 1/2 tsp salt
• 200g granulated sugar
• 200g light brown sugar
• 3 extra-large eggs, at room temperature
• 3 tsp pure vanilla essence
• 125ml buttermilk, at room temperature
• 175ml sour cream, at room temperature
• 3 tbsp freshly brewed coffee
• 700g milk chocolate chips
• 375ml double cream
• 2 tbsp golden syrup
• 1/2 tsp pure vanilla essence
• 4 tbsp (50g) unsalted butter, at room temperature
• Smarties or M&Ms for decorating