Preheat oven to gas mark 7

Beat spread and sugar together until pale and fluffy

Gently stir in milk and vanilla

Whisk aquafaba until it goes frothy

Gently fold into mixture

Sieve in flour and baking powder

Gently fold in, taking care not to knock out any air

Pour mixture into a greased baking tray

Baking for 45 minutes or until skewer comes out clean