- Preheat your oven to 350 degrees. Grease two large loaf pans with oil of choice. (I like coconut or butter) 
- In a shallow frying pan over medium heat melt the butter and allow it to cook until it starts to turn a nutty brown. Be sure to stir it frequently so it doesn't burn. Once it is a deep rich brown remove it from the heat and pour into a shallow bowl to cool for 10 minutes or so. 
- With an electric mixer in a large bowl, blend together the bananas, eggs, greek yogurt, and vanilla. Add the browned butter and two sugars. Beat for a few minutes to make sure everything is incorporated. 
- Sift into the bowl both types of flour, the spices, baking powder, baking soda, and salt. Mix for a few more minutes to make sure everything is combined. 
- Pour the batter evenly into the two greased pans and bake for 35-40 minutes or until a toothpick inserted into the center comes out clean. Check at about 30 minutes and if getting to brown on top cover loosely with foil. 
- Cool for about 10 minutes then turn on to a cooling rack. Slice and serve with butter or softened cream cheese.