Recipe found on http://www.taste.com.au/recipes/easy-banana-cake/3e88aa70-df01-411e-9f27-b25bf850d6eb
1 cup self-raising flour
1 cup caster sugar
50g butter, melted
1 egg, lightly beaten
1 teaspoon vanilla essence
1/4 cup (60ml) milk
1/2 cup mashed banana
MethodStep 1. Preheat oven to 180C/160C fan-forced. Spray a 7cm-deep, 10 x 20cm (base measurement) loaf pan with oil. Line base and sides with baking paper, extending 3cm above rim.
Step 2. Sift flour into a large bowl. Stir in sugar. Make a well in the centre. Add butter, egg, vanilla, milk and banana. Stir until just combined.
Step 3. Pour into prepared pan. Bake for 30-35 minutes or until a skewer inserted into centre comes out clean. Set aside in pan for 10 minutes to cool slightly. Serve warm or transfer to wire rack to cool completely.