Preheat oven to 170°C/325°F/Gas mark 3
Prepare baking tin with grease proof paper. I prefer to fold paper over the sides of the tin as this makes it easier to lift the cake from the tin when cooled.
In a large bowl mix all the sponge ingredients together until it forms a smooth consistency.
Pour the mixture into prepared baking tin and spread out evenly.
Bake in the Oven for approximately 40 mins insert a skewer into cake after this time if it comes out clean its ready if not leave it in a slightly longer. (Times may vary slightly dependant on oven). Transfer tin to cooling rack and leave to cool.