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Peanut Butter and Dark Chocolate Flapjacks

Traditional Scottish flapjacks flavoured with peanut butter and dark chocolate chips. A simple energy bar tray bake made with porridge oats.

Peanut Butter and Dark Chocolate Flapjack

Peanut Butter and Dark Chocolate Flapjacks

Continuing my craving for peanut butter I made these chewy flapjacks.

I saw a basic recipe in a free supermarket magazine, made a few changes, changed it into cup measures and voila!

Using cup measures is so much easier for a recipe like this. If you don't have a cup measure, use a teacup.

The wee boy and I also shared a peanut butter and Nutella sandwich as a snack this afternoon, it was very yummy.

You can see him eyeing up the flapjacks.

Peanut Butter and Dark Chocolate Flapjacks

What Are Flapjacks?

Flapjacks are a traditional Scottish traybake made with porridge oats.

Oats are a staple crop in Scotland and feature in many of our seasonal recipes such as porridge, crancahan, fruit crumble and overnight oats.

The basic flapjack recipe is made with oats, butter, sugar and honey, but it can easily be tweaked.

porridge oats


The main ingredient of this simple traybake is oats.

The best type of oats to use is porridge oats.

Jumbo oats are too coarse and you may find they don't bind well and fall apart and oatmeal is just too fine for this recipe.

peanut butter

Peanut Butter

Peanut butter helps to bind these flapjacks and adds a lot of flavour too.

It also pairs so well with chocolate.

I used crunchy peanut butter for texture, but it can also be made with smooth peanut butter if you prefer that or if that's what you have in your cupboard.

dark chocolate chips

Dark chocolate chips

The chocolate in this recipe comes in the form of dark chocolate chips.

If you are making these flapjacks vegan, then do be careful when buying chocolate chips as many dark chocolate chips which you would assume would be suitable for vegans, actually contains milk.

If you can't find any suitable chocolate chips you could instead chop some dark chocolate into small chunks.

Try these flapjacks next

blueberry and lemon oaty breakfast bars

If you like these peanut butter and dark chocolate flapjacks, why not try my blueberry and lemon oaty breakfast bars and yes my photography has improved somewhat since 2011 when this recipe was published. 

I must reshoot these peanut butter and chocolate flapjacks when I have the chance. 

You may also like my oaty chocolate and banana cookies, which are chewy like a flapjack.

For more Scottish recipes have a look at my recipe index of Scottish Recipes for Vegans and Vegetarians

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Yield: 16 squares

Peanut Butter and Dark Chocolate Flapjacks

Peanut Butter and Dark Chocolate Flapjacks

Traditional Scottish flapjacks flavoured with peanut butter and dark chocolate chips. A simple energy bar tray bake made with porridge oats.
prep time: 10 Mcook time: 25 Mtotal time: 35 M


  • 1⁄3 cup unsalted butter or dairy free spread
  • 1⁄3 cup crunchy nut peanut butter
  • ½ cup demerara sugar
  • ¼ cup golden syrup
  • 3 cups porridge oats
  • a pinch of salt
  • ½ cup dark chocolate chips


How to cook Peanut Butter and Dark Chocolate Flapjacks

  1. Preheat the oven to 130c fan/150c/Gas Mark 2.
  2. Line a 20cm x 20cm square tin with greaseproof paper. I rub a little margarine on the tin, so the paper will hold in place.
  3. Before measuring out the peanut butter and golden syrup, rub a little olive oil over your measuring cup and they will slide out easily. It makes the process so much easier.
  4. In a pan, gently melt together the butter, peanut butter, sugar and syrup.
  5. In a large bowl sprinkle a pinch of salt over the oats and mix in.
  6. Pour the melted peanut butter mixture over the oats and stir until well combined. 
  7. Leave to cool before adding the chocolate chips to retain their shape. I was in too much of a rush, so I have smeared chocolate instead of chocolate chips.
  8. Pour into your prepared tin and smooth out with a spoon.
  9. Bake in the pre-heated oven for 25-30 minutes until golden.
  10. Leave to cool for a few minutes before scoring out the squares. Leave the flapjacks in the tin to cool completely.
  11. Enjoy!


These can be kept in a cake tin or airtight container for 3-4 days.
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Created using The Recipes Generator


  1. Oh my goodness, what are you trying to do to me? ;)

  2. These look worth the indulgence! What a delicious combo

  3. Feeling a little ropey this morning after a fantastic Friday night of food and celebration - man would those flapjacks go down a treat right now. I love the combo of PB and oats.

  4. Cooper is looking very dubious about those. Hope he changed his mind later. :)

  5. How delicious Jac!

    I think flapjacks have just gone on my to bake this afternoon list!

  6. It's a good thing I'm out of PB or I'd be making these right now! :)

  7. Great recipe and definitely waistband challenging!

  8. Lol - they look fab, I bet they will be too tempting to give away!

  9. Holy wow. These look brilliant. Combining peanut butter and dark chocolate is a plus.

  10. Jac, you have so many delicious peanut butter recipes. I would never have thought of putting these in flapjacks. I've just posted about some flapjacks I made, but they don't sound half as good as yours.

  11. Sorry Sarah :)

    Hi Brittany, Peanut butter and dark chocolate just go so well together. Mmmmmmmm :P

    The perfect morning after cure then Monica? Maybe I should change the title :)

    Didn't let him have one David. How cruel am i? Graham took them to work.

    Good stuff Helen :)

    I am really enjoying peanut butter again Barbara (can you tell?). I didn't want to take the risk of eating peanuts while I was pregnant and then breastfeeding, but now Cooper is older and we have tried him on peanut butter and he is alright with it, so I can indulge in it again.

    Yes, not the lowest of fat recipe Janice. Best not to think about it :)

    I managed Chele, you would be proud of me :)

    Thanks TB :)

  12. I bet peanut butter is fab in a flapjack - it would really help the texture and the flavour

  13. He he - HUGE flapjack and TINY baby! Hope they were as good as they look :)

  14. Stop it! You must stop tempting me with these amazing peanut butter recipes. I could probably demolish that whole tray of flapjacks right now!

  15. These look great! And wheat free! YAY!

  16. Ooohhhh, I have to try those. They look and sound perfect.

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  18. They couldn't be healthier .... they're full of oats ! Eat two quickly .

  19. Ooooh my dear, you have made success bars here!

    My husband loves anything with PB in them!!

    Recently, I also am using measering cups etc. It makes baking so much easier! But I am still measuring in metrics too!

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  22. I will have to make these for David, not a fan of PB but he *loves* it!

    Also noticed you had ordered the dino sandwich cutters - I bought them too a while back and love them! Good for cookies too! :)


  23. Oh my, these look amazing! I've got such a soft spot for PB and as I'm currently without scales this cup measurement recipe is perfect.


I love reading comments, so thank you for taking the time to leave one. Unfortunately, I'm bombarded with spam, so I've turned on comment moderation. I'll publish your comments as soon as I can and respond to them. Don't panic, they will disappear when you hit publish. Jac x