Preparation
Preheat oven to 180°C or 160°C fan forced. Grease a 12-hole (1/3 cup capacity) standard muffin tin.
Sift flour, cinnamon, sugar and a pinch of salt into a large bowl.
Make a well in the centre. Add yoghurt, egg and oil. Stir until mixture has nearly come together. Add fruit and stir a couple of more times. Mixture should be quite lumpy. Divide among 9 of the holes. Sprinkle with cinnamon sugar if desired.
Bake for 25 minutes or until golden brown and cooked through.