cup of sugar ( I changed this to ½ to be healthier) and added little more yogurt about 2 oz.
oz of yogurt
cup of white flour
cup of whole wheat flour
teaspoon baking soda
(optional chocolate chips, walnuts)
Mash bananas in separate bowl. Cream butter, sugar and eggs. Add bananas, yogurt, and vanilla. Mix in the dry ingredients. Bake in a greased loaf pan @ 350 for 1 hour.