Wash and quarter orange. Remove seeds if required. Chop entire orange, (including peel) in food processor. Add remaining wet ingredients and mix. Add premixed dry ingredients. Blend together until dry ingredients are just moistened. To bake, preheat oven to 375°F Grease bottoms only of medium size muffins cups, fill 2/3 full. Bake at once, until golden brown, 15-20 minutes.