Chocolate quinoa cake with peanut butter frosting

Chocolate quinoa cake

• 120 g butter, plus extra for greasing
• 170 g red quinoa
• 520 g water
• 4 eggs
• 80 g milk
• 1 tsp vanilla bean paste
• 250 g caster sugar
• 30 g cocoa powder
• 1 ½ tsp baking powder
• 1 pinch salt

Peanut butter frosting

• 120 g cream cheese, cut into pieces
• 60 g peanut butter
• 1 tsp vanilla bean paste
• 120 g icing sugar