Preheat oven to 180°C (350°F). Place 1 ½ ripe bananas in a bowl and mash with a fork. Add the oil, eggs, sugar and vanilla and mix to combine. Add the self-raising flour and cinnamon and mix to combine.
Pour into a 22cm round cake tin lined with non-stick baking paper. Cook for 45 minutes or until a skewer comes out clean.
Rest the cake in the tin for 5 minutes before turning out onto a wire wrack to cool completely.
Recipe by Grab Your Spork | grabyourspork.com at https://grabyourspork.com/recipes/baked-goods/easy-banana-cake-recipe/