Preheat oven to 350 F. Grease a 9 x 5 x 3 loaf pan with butter and flour or use "Spectrum" Canola Oil Baking Spray with flour-my favorite)

In a large bowl, combine the first five ingredients. Set aside

In a medium bowl, mash bananas, and then add yogurt, eggs, butter, and vanilla. Mix well.

Gently fold the banana mixture into the flour mixture with a spatula. Combine until all the flour mixture is well blended, do not over mix.

Pour batter into the prepared loaf pan, bake until golden brown and toothpick comes out clean when inserted in center, about 1 hour. If bread is getting too golden and the center is not done, lay a piece of foil over bread until done.

Cool in the pan for 5 minutes, and then transfer to a wire cooling rack.

*recipe can be doubled