Cut the orange into 8 pieces without peeling.
Put the cut-up orange (that's right — the whole orange), orange juice, egg and oil in blender. Blend until smooth.
Add flour, sugar, baking powder, baking soda and salt. Blend.
Add raisins and nuts. Blend just until mixed.
Pour mixture into muffin tins and bake at 375°F (190°C) for 15–20 minutes.
12 servings