Preheat oven to 180°C
Sift flour, baking powder and bicarb soda together
Stir in caster sugar
In a separate bowl, mix milk, oil, vanilla and egg
Pour wet ingredients into dry ingredients
Gently fold to combine. Don't overwork the mixture. It's okay to have lumps
Fold or mix in fruit
Fill muffin pans to just below top
Mix lemon zest and raw sugar, sprinkle over muffins
Bake for 20 minutes
