A great easy and cheap breakfast is porridge. You can buy them very cheap. I buy oats at 0,93€ a kilo, around 26 servings out of this (for each 2 portions of oats add 4 portions of milk.
This is around 170ml soya milk (0,80€ 1 lt at Tesco or Aldi) and some maple syrup and cinnamon.
This gives a total of around 0,19€ (with only cinnamon) each day, or 0,29 € with maple syrup. But you could reduce the end price if you buy cheaper oats and/or cheaper maple syrup.
