In a large mixing bowl, beat together till smooth the banana, egg, vegetable oil, bran cereal, vanilla, orange peel or oil and yogurt. Set aside.
In a separate bowl, whisk together the flour, baking powder, baking soda, salt and sugar. Quickly and gently fold the dry ingredients into the wet ingredients, stirring only until everything is moistened. Spoon the batter into a lightly greased 8 1/2 x 4
Bake the bread in a preheated 350°F oven for 50 minutes to 1 hour, or until the cake tester inserted into the center of the loaf comes out clean. Remove the bread from the oven, and cool for 5 minutes on a rack. Remove the bread from the pan, and cool com