Chocolate Buttercream Icing Layer Cake

Ingredients

• 3 cups plain flour
• 2 cups CSR White Sugar
• ½ cup cocoa
• 2 tsp bicarbonate soda
• 1 tsp salt
• ¾ cup sunflower or vegetable oil
• 2 tbs white vinegar
• 2 tsp vanilla essence
• 2 cups cold water
• 150g butter, softened
• 250g CSR Chocolate Buttercream Icing mixture
• 3 tsp water
• Maltesers, to serve