Preheat oven to 140*C

Spray a ring-shaped tin with cooking spray

Place the self-raising flour,plain flour,sugar,butter,milk,eggs and vanilla essence into a large bowl

Use a electric beater on high speed for about 40 seconds or until thoroughly mixed

Spoon mixture into pan and tap pan on hard surface until all bubbles rise and disappear

Bake in oven for one hour

Once cake is cooled spread icing sugar on top to decorate