They’ll only ever buy muesli bars rather than baking cereal mixes into bespoke energy bars worth swapping the bought versions for. It’s not that I don’t occasionally reach for packet food ...

Preparation In a large bowl, mix rolled oats, wholegrain spelt flour, nuts or almonds and vanilla. Heat butter or margarine, stir it together with honey and water, and pour it over the dry mixture ...

Less sugar, but all your favourite ingredients: There's a lot to be said for making your own granola bars. Christian Hacker/Verbraucherzentrale NRW/dpa ...