Preheat oven to 180 degree C.
Take brown sugar, yogurt, oil, flax egg in a bowl and whisk well.
Add in flour, baking soda, cinnamon, ginger and fold gently.
Add in grated apples and candied ginger. Fold gently.
Scoop into muffin pan and bake for 20 to 25 mins.
Remove and cool completely before serving.