Cream butter, sugar and vanilla.
Add eggs separately, beating well.
Mash bananas and add to mixture.
Dissolve soda in milk and add flour and milk alternately.
Bake in 2 greased tins or 1 large tin 180 degrees for 35 minutes or until cooked.
I sometimes make in muffin tins, its a good size for kids - 20 minutes cooking time.
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