Place 50 grams of the oats, the raisins and the crumbled stock cube into a blender or food processor and pulse until well combined. Alternatively, chop, chop, chop until everything is really fine and starting to stick together.
Transfer mixture to a bowl and add the remaining 25 grams oats. Roll into small balls, about the diameter of a pound coin.
Pop in the fridge to harden or tuck in straight away with a glass of milk to wash it all down.