Method:

Cream butter and sugar until soft and fluffy.  Add eggs one at a time, beating well after each addition.  Add vanilla essence.  Fold in the sifted dry ingredients alternately with the combined mashed banana and yoghurt.  Stir through Pecans Nuts and sultanas.  Divide mixture between 2 greased and lined 19cm x 9cm loaf pans.  Bake in moderate oven (180°C), approximately 1 hour or until cooked when tested.  Let stand in pan 10 minutes before turning out to cool on wire rack.