Do what the inventors (the Swiss) do....add some chopped apple and the cold milk and leave overnight in fridge. Drizzle with runny honey in the morning.
And I agree that Lidl's muesli is excellent and very good value, too.
Muesli is often endearingly called the healthy sibling of granola. Muesli tends to be a bit drier and, thus, is typically eaten as a breakfast cereal. It can be eaten cold with any sort of milk or yogurt or it can be cooked hot like oatmeal.