- STEP 1
Preheat the oven to 180C/350F/Gas 4.
- STEP 2
Sift the flour, bicarbonate of soda and salt into a large mixing bowl.
- STEP 3
In a separate bowl, cream the butter and sugar together until light and fluffy.
- STEP 4
Add the eggs, mashed bananas, buttermilk and vanilla extract to the butter and sugar mixture and mix well. Fold in the flour mixture.
- STEP 5
Grease a 20cm x 12.5cm/8in x 5in loaf tin and pour the cake mixture into the tin.
- STEP 6
Transfer to the oven and bake for about an hour, or until well-risen and golden-brown.
- STEP 7
Remove from the oven and cool in the tin for a few minutes, then turn out onto a wire rack to cool completely before serving.