Post Workout Flapjacks

These flapjacks are perfect to have as a post workout snack.

One of the things I love about flapjack recipes is how versatile they can be. You can just make bog-standard golden syrup bars, or maybe jazz it up with chocolate chips or dried fruit. Anything is possible! (Within reason here: I’m still not convinced by bacon flapjacks, but willing to have my mind changed.)

I decided to take up the flapjack challenge, which I have made up just now for the purposes of this recipe, and address I recurring food problem in my life.

I am a keen runner and am currently running about 20-30km a week. One of my main goals is to improve my times for 5 and 10K and to do this, I will need to put on a bit of muscle and loose some fat, this means upping my protein! I do buy whey powder as it’s a cheap source of protein for my student budget. However, I’m normally too lazy to mix it up when I get in from a run and I’m also usually craving some sort of food.

So, my mind being as baking oriented as it is, I thought – make whey protein flapjacks, or as I like to call them, post workout flapjacks.

Even if you aren’t a runner or gym person, just omit the whey protein and keep everything else, these flapjacks are still packed with milled flax seed, oats and other seeds. Perfect for a pick me up anytime!


  • 200g Porridge Oats
  • 75g Butter – You can use low fat spread if you wish, I prefer not too as they are usually packed full of additives, it’s a personal choice though!
  • 60g (2 Scoops) Chocolate Whey Powder – Any flavour will work, Vanilla or Banana perhaps
  • 40g Milled Flax seed
  • 30g Mixed seeds or nuts
  • 2tsp Ground Cinnamon
  • 100g Honey

You could also add Cocoa nibs, dried fruit, dark chocolate chips, chopped pistachios, etc. The list is endless!


  1. Preheat your oven to 180C and line a baking tray with greaseproof paper
  2. Mix together all dry ingredients: oats, whey powder, flax seed, seeds/nuts and cinnamon
  3. Melt the butter and honey in a saucepan over a low heat and mix until the butter is melted and fully combined.
  4. Tip in the dry mixture into your saucepan and mix everything together until well combined
  5. Turn out the mixture onto the baking tray and squish everything down until 2cm thick and flat! Don’t be afraid to really use your hands for this and get stuck in there (but remember to wash them!)
  6. Put your tray into the oven and cook the flapjacks for 20-25 minutes.
  7. Wait 10 minutes after taking out the oven before cutting them into your desired size, they will need to have cooled down to make this easier.
  8. Enjoy as a snack for a boost of energy, or pre/post run snack! Maybe even for breakfast on the go.

As always, let me know if you try them!

Written By John

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