Using a whisk, beat the sugar, eggs and salt in a bowl for approx. 5 mins. until light and fluffy. Add the butter to the mixture together with the yoghurt. Mix together the flour, baking powder and oat flakes, then stir into the dough. Divide the dough between the prepared moulds.
Bake: for 25 -30 mins. in the centre of an oven preheated to 180°C. Allow the muffins to cool a little, then leave to cool completely on a rack.
Oat flake crunch
Toast the oat flakes with the honey in a pan for 3-5 mins. Transfer the crunch to a sheet of baking paper and allow to cool. Decorate the muffins with the crunch.