Mash your bananas

Preheat oven and prepare baking tin

Mix butter and oil till combined

Cream butter/oil mixture with sugar till pale and fluffy

Seive flour baking soda and powder together twice

Add eggs one at a time mixing well after every addition

Add flour twice

Add your mashed bananas and mix lightly

Bake at 160 till a skiwer inserted at the center comes out clean.