Marathon chia flapjacks

A slight deviation from science and running today, but a lovely recipe for runners and the like to fuel their longer endurance efforts in light of the upcoming London Marathon this Sunday (good luck everyone!)

I’ve tried a lot of different energy bars and my favourite so far for on-the-go fuel are the Nakd cashew cookie bars. They are 100% natural with only 2 ingredients – dates and cashews – and for me aren’t too overly sweet. I do find they can be a bit dry and cloying at times though, and for that reason, I try and eat them just before a water station during races. It’s always good to try new things though, maybe not during the race you’ve been training for over 6 months for, but on a few upcoming training runs. So as an alternative to the shop-bought bars, here’s a quick and easy recipe for chia seed- and energy-packed flapjacks.
The recipe is straight from the guys who bring us Chia Charge flapjacks, you might have seen these in the shops, made with Chia Charge seeds and only natural ingredients. I made these last night and it took me less than 15 minutes to whip up, with another 10 minutes in the oven. I didn’t have a blender, as the recipe suggests, but a wooden spoon and some good ol’ elbow grease did the job.

Chia seed flapjacks (makes 12-15 slices)

  • Ingredients 

  • 240g porridge oats 
  • 100g honey
  • 160g nut butter (I used almond, but you can use your favourite)
  • 110g golden syrup
  • 60g chia seeds
  • 4g sea salt flakes
  • 110g raisins (or any dried fruit, chopped)

  • Method
  • Place the nut butter and golden syrup into a mixing bowl and stir together to a paste. 
  • Add honey and sea salt flakes, before the rest of the ingredients, mix thoroughly. 
  • Pour into a lined baking tray and press the mixture firmly down and out to the edges (I find a potato masher does a great job here!)
  • Bake in a pre-heated oven at 180C for 10-12 minutes until lightly golden.
  • Leave to cool before slicing.
  • Enjoy! (these keep in an air tight container for up to a week)

The sea salt flakes might seem a little bit OTT, but they add a nice flavour to the otherwise all-sweet base and provide electrolyte benefit to replace all the salts lost during sweating/exercise. You can wrap the flapjack pieces in cling film or foil and stash them easily in your pockets/bag for a burst of energy and tasty treat during your run.

Happy baking and running! Let me know if you give these a go and what other flavours you think it would be nice to add…ginger, banana, pineapple?!



  1. Mrs Clare Parkinson
    24th April 2019 / 9:17 am

    Hi – thank you for this recipe. Iā€™d like to try it but would prefer to replace the honey and syrup with natural fruits, such as the cranberries and dates (as the company use in their recipes). Do you have any advice about the quantities of these that I should use?

    • Amy
      24th April 2019 / 9:23 am

      Hi Clare, thanks for reading. The honey and syrup are the ingredients that bind the oats together so you could use a natural fruit syrup like date to replace these. Adding extra fruit like cranberries sounds lovely!

  2. michael williams
    6th October 2019 / 10:09 pm

    Hi Amy,
    If you want the bars more moist which makes them easier to swallow during a run or ride, soak the oats overnight first. Then bake a bit longer i.e. for 20 mins.

    Banana and crystallised ginger pieces work really well too, so does quinoa for added protein.

  3. Kelly Hanson
    15th October 2019 / 11:32 am

    Used these flapjacks for a 6 hour running challenge and the bars helped me run my first marathon distance! I’m making them again for another 6 hour challenge tomorrow. Thanks for the recipe it’s great!

    • Amy
      15th October 2019 / 12:23 pm

      Thank you Kelly! I’m so glad to hear they’ve fuelled you well! Good luck for the next challenge!

  4. DAVE B
    12th July 2020 / 8:35 pm

    Mine turned out a bit friable so not sure how well 6mhey would travel. Any ideas?
    Also, what do you tend to wrap them in? I find foil can stick to flap Jack.
    Taste great tho, thanks.

  5. 5th September 2020 / 10:44 pm

    Running the Ring of Steall tomorrow in Glen Nevis so my flapjacks in oven as I type šŸ™‚

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