Preheat oven to 400°F and either spray a 12 count muffin tin with non-stick spray or use muffin liners.

In a large mixing bowl, add the mashed banana, oil, egg, milk, orange juice, vanilla, and sugar and mix together.

On top of the wet ingredients, add flours, baking powder, and salt – stir those together on top to mix in the baking powder and salt and then mix with the wet ingredients.

Stir in 1/2 cup granola to the batter.

Spoon batter evenly into muffin tins and sprinkle the remaining granola on the muffins.

Bake for 18-20 minutes or until a toothpick inserted into the center comes out clean and the tops are a light golden brown.

Let cool before eating.