Grease a 2lb loaf-tin with melted butter and line with grease-proof paper
Melt butter, sugar and vanilla in a saucepan over a medium heat
Remove from heat and add the mashed bananas, mix well
Add the egg and mix well
Stir in the flour and the milk
Pour into the tin
Bake at 170 C / Fan 150 C / Gas 3 for 35 minutes, or until a knife comes out clean.
Leave to cool and enjoy!
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