Best Ever Blackberry Crumble Bars (Gluten Free, Vegan)

Prep: 5 minutesCook: 30 minutesTotal: 35 minutes
Yield: 9Category: Baking
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These deliciously buttery blackberry crumble bars are the perfect fruity dessert or snack for those who fancy something sweet but don’t want chocolate.

I originally made these blackberry crumble bars because I had some leftover homemade chia jam that I didn’t want to go to waste. You could say they were a very happy accident! These bars give a nod to the classic crumble but make an ideal breakfast or on the go snack due to them travelling well. They are a more nutrient dense option as they are made using ‘healthy’ ingredients and are refined sugar free.

I use blackberry jam in these bars but you could use any flavour you wanted to. It is on my to do list to try a version of these with some kind of melted chocolate running through the middle so keep your eyes peeled! I have not made these bars using shop bought jam and I couldn’t recommend doing so as I’m not sure if the different consistency would mean the jam spreads. Luckily my homemade chia jam only takes 15 minutes!

For this recipe you will need to use butter from a hard block rather than a spread. Ensure that you allow these bars to cool fully before removing them from the tray or slicing into them otherwise you risk them falling apart. I use a lined 8″ x 8″ brownie tray for these and it results in the perfect thin bake that I then cut into nine individual squares.

If you enjoy these blackberry crumble bars you may also enjoy my Mango, Pineapple & Ginger Crumble Bars, my Apple & Cinnamon Crumble Bars and my Rhubarb Crumble Bars. These are best eaten within two days, however, will last up to a week in an airtight container.

If you like this recipe and want to show some support please leave a comment below or visit my Ko-Fi account to donate! x


  • 125g 1 + 1/2 cups gluten free oats
  • 125g 3/4 cup gluten free plain flour
  • 100g 1/4 cup + 3 tsp dairy free butter (block)
  • 5 tbsp blackberry chia jam
  • 80g 1/4 cup + 2 tbsp coconut sugar
  • splash vanilla essence
  • pinch sea salt


  1. Add the butter to a saucepan and melt over a low heat
  2. Place the oats, flour, coconut sugar and sea salt in a large mixing bowl
  3. Once the butter has cooled, pour into the mixing bowl along with a splash of vanilla essence
  4. Mix well using either a wooden spoon or your hands until all of the ingredients come together
  5. Tip roughly one half of the mixture into a baking tray lined with parchment paper and press down firmly using your fingertips or the back of a spoon to ensure the mixture is packed firmly in
  6. Dollop the jam on top of the oat mixture and spread it out using the back of the spoon until there is an even layer across the top
  7. Add the remaining oat mixture to the tray by sprinkling it evenly across the top. Use the back of a spoon to gently press down, taking care not to smear the jam, until the mixture completely covers the top of the tray and no jam is visible. Pack down firmly using the back of the spoon ensuring the top is even
  8. Place in a preheated oven and bake for 30 minutes at 180 degrees Celsius or until golden on top
  9. Allow to cool before slicing into squares


  1. Tracey

    I have just made these and I couldn’t wait for them to to completely cool before I cut them,. I think I have eaten about half already ???? absolutely gorgeous, a perfect afternoon snack.

    Thank you for another mouth watering recipe.

    • Hayley

      I make these regularly. They are so moorish and delicious. They never last long. I have to hide them from the family ????

      • Natasha Gelder

        Oh I’m so glad you like them! The fact you hide them so you don’t have to share made me laugh! x

  2. Tracey

    I made these bars yesterday & they have nearly all gone already. They are absolutely delicious and are perfect with and afternoon cup of tea. ????

    • Natasha Gelder

      Hi Tracey! I’m so glad you like them ???? I plan to upload an apple and cinnamon version this coming week which may be worth a try next! X

  3. Clare McKenzie

    This is our next must-try recipe after the triumph of the Apple & Cinnamon Crumble Bars! Xx

    • Natasha Gelder

      Oh I’m glad you liked the apple version! They are very similar you’ll have to let me know which is your favourite 🙂


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