Magnolia Kitchen red velvet cakes with vanilla cream cheese icing

Red velvet cakes

• 120 g buttermilk
• ½ tsp natural red food colouring (see Tips)
• 1 egg
• 150 g plain flour
• 150 g caster sugar
• 30 g cocoa powder
• 65 g salted butter softened
• 2 tsp apple cider vinegar
• 1 tsp bicarbonate of soda

Vanilla cream cheese icing

• 150 g cream cheese cut into pieces
• 150 g salted butter cut into pieces
• 50 g icing sugar
• ½ tsp natural vanilla extract
• ¼ tsp vanilla bean paste