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Cheese and onion flapjacks recipe

Cheese and onion flapjacks recipe

9 ratings

Crumbly and cheesy, these savoury flapjacks are the perfect lunchbox snack or morning pick-me-up. Use mature cheddar cheese for a stronger flavour! See method

  • Serves 2
  • 10 mins to prepare and 25 mins to cook
  • 395 calories / serving
  • Vegetarian


  • 35g salted butter
  • 1 small onion, finely diced
  • 25g plain flour​
  • 50g porridge oats, plus 1 tsp
  • 50g Double Gloucester with onion and chives, coarsely grated

Each serving contains

  • Energy

  • Fat

    25g 36%
  • Saturates

    15g 76%
  • Sugars

    3g 3%
  • Salt

    0.8g 13%

of the reference intake
Carbohydrate 29.7g Protein 10.4g Fibre 4.4g


  1. Preheat the oven to gas 5, 190°C, fan 170°C. Put the butter and onion in a microwave-safe bowl and microwave on medium-high for 2-3 mins or until the butter has melted and the onion has softened.
  2. Mix the flour, oats and half the grated cheese in a large bowl and add the onion mixture. Season and mix really well.  
  3. Line a 15 x 20cm baking dish with nonstick baking paper. Tip the mixture into the tin and press down firmly to compact the mixture. Top with the remaining cheese and 1 tsp oats.
  4. Bake for 20-25 mins until the flapjack is just golden and the cheese has melted. Leave to set and cool for 10 mins before turning out and cutting into 4 bars. Will keep for 2 days in an airtight container in the fridge.

Cook's tip: Cheddar would also work brilliantly here.

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