To make the muesli, mix all the ingredients in a bowl until well combined. Store in an airtight container.
To serve, pour 1/3 of the muesli in a bowl, add milk according to preference and sprinkle over the topping of your choice.
You can also mix things up by adding other seasonal fruits like strawberries in summer or fruit combos such as dried cranberries and pistachio nuts or blackberries and raspberries. As temperatures drop come autumn, it works equally well with chopped Cox's apples.