This recipe is from my mum, the one she's always made. It dates back from her seventh grade cooking class! We always stuff it with nuts and chocolate chips.
1/3 cup butter
3/4 cup sugar
1 cup mashed bananas (2-3 bananas)
1 1/2 cups flour
1 tsp salt
1 tsp baking soda
1/2 cup milk
1/2 cup chopped walnuts and/or chocolate chips (more or less as desired)
preheat oven to 350 degrees F. cream together butter and sugar. add eggs one at a time, beating well after each addition. stir in mashed banana. combine flour, salt and baking soda. add the dry ingredients, alternating with milk (in thirds, mixing each time until just incorporated). bake in wax paper-lined loaf pan for 1 hour, then turn out onto rack to cool. wrap in foil. better to slice on second day-- otherwise it looks like this!