These blueberry oat bars are perfect to have in the fridge for super busy weeks. You know, for days when you have no time in the morning for a sit down breakfast or even enough time to prepare anything to take with you as you rush out the door. Packed with antioxidants from the blueberries as well as fibre and slow releasing energy from the oats.
Lemon and blueberries is just the most refreshing and zingy combination. I absolutely love fruity treats and these blueberry oat bars just hit the spot. They’re sweet enough to curb those sweet cravings many of us experience first thing in the morning, but not too sweet that you feel like you’re having dessert for breakfast.
Why I love making these blueberry oat bars:
When it comes to satisfying your sweet tooth without sacrificing nutrition, something like these homemade blueberry oat bars are a perfect choice. These delightful treats combine the natural sweetness of blueberries with the hearty goodness of oats, making them a versatile option for breakfast, a midday snack, or even dessert. Plus, they’re easy to prepare and can be customised to suit your taste and dietary preferences.
Homemade blueberry oat bars not only taste better than store-bought options but also give you control over the ingredients. You can avoid unnecessary preservatives, artificial flavours, and excess sugar while creating a treat that’s bursting with fresh, natural flavours.
Whether you’re looking for a healthy snack for the kids, a portable breakfast option, or a healthier dessert, these blueberry oat bars are sure to become a household favourite.
Sometimes I make these blueberry oat bars with other fruits or berries like frozen raspberries or strawberries. Fruit like peaches, nectarines or apples would also work beautifully!
Why you need to try these blueberry oat bars:
Nutritious Ingredients – Blueberries are rich in antioxidants, vitamins, and fibre, while oats provide whole grains that are known to support heart health and keep you feeling full longer.
Customisable – These blueberry oat bars are vegan, nut-free and can easily be made gluten-free by using gluten-free oats. See ‘notes’ below for more customisation options.
Simple to Make – With a few pantry staples and fresh or frozen blueberries, you can whip up a batch in under an hour.
Versatile – These bars make a great grab-and-go breakfast option, but they’re also great as a mid-day snack or even a lighter dessert after meals. You can also freeze them, so you always have a healthy homemade snack on hand!
What you need to make these blueberry oat bars:
Oats – I used porridge oats, as they cook quicker in the oven and turn out less chewy. I also used oat flour, which is basically oats that I’ve ground up in a high-speed blender into a fine flour. Make sure you use gluten-free oats if you need the recipe to be gluten-free.
Blueberries – Packed with antioxidants and nutrients. Frozen blueberries are great because they’re cheaper, don’t go off and tend to be more nutritious since they’re frozen soon after being harvested. You can use fresh blueberries if you prefer, or another kind of berry like raspberries.
Sugar – We need some sort of sweetener to make these blueberry oat bars taste good and to enhance all the flavours. I used granulated white sugar, but brown sugar will also work. You can also use a sugar-free sweetener if you need a lower sugar/carb option.
Butter – You’ll need to add some kind of fat in the form or butter or a dairy-free alternative like a dairy-free spread or coconut oil. This will help bind the oat ingredients together since we’re not using any eggs/other forms of binder. It also adds a bit of richness to the oat base so it’s not dry and crumbly.
Cornflour – This will help the blueberry layer set while it bakes, creating almost a blueberry jelly like texture, which I love! Helps set the blueberry layer so it’s easier to slice into bars.
Lemon zest & juice – Because I think lemon and blueberry go so well together!
How to make these blueberry oat bars:
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Preheat your oven to 180C/160C fan/350F.
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Mix together the oat flour, oats, sugar, baking powder, lemon zest and salt in a large bowl. Fold in the butter and mix until you have a crumble consistency.
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Transfer 3/4 of the mixture into an 9” square cake tin lined with parchment paper. Press down with your hands or a spoon to make sure the base is even.
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Add the blueberries, sugar, cornflour, lemon juice and water to a saucepan. Mix and cook over a medium heat until the mixture starts to thicken a little.
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Take off the heat and pour onto the base.
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Sprinkle on top the remaining oat mixture and bake for 30-40 minutes.
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Leave to cool completely before slicing. Enjoy!
How to store your blueberry oat bars:
Store these blueberry bars in an airtight container in the fridge for up to 5 days . They also freeze well for longer storage.
These blueberry oat bars are:
- Vegan
- Dairy-free
- Nut-free
- Soy-free
- Can be made gluten-free
- Easy to adjust
- Great as a healthy snack
- Great as a lighter dessert
- A good grab-and-go breakfast
- Freezer friendly
- Easy to make
- So yummy!
These bars didn’t last long at all. The hubby and I gobbled them up within a couple of days. He doesn’t even usually like sweet treats, but he absolutely LOVED these blueberry oat bars!
Blueberry Oat Bars
Ingredients
For the oat crumble
- 160g porridge oats
- 130g oat flour* see notes
- 4 tbsp sugar** see notes
- 1 tsp baking powder
- 1/4 tsp salt
- 125g butter/dairy-free butter*** see notes
- Zest of 1 lemon
For the blueberry filling
- 350g g frozen blueberries
- 2 tbsp lemon juice
- 2 tbsp sugar
- 2 tbsp cornflour
- 1 tbsp water
Instructions
- Preheat your oven to 180C/160C fan/350F.
- Mix together the oat flour, oats, sugar, baking powder, lemon zest and salt in a large bowl. Fold in the butter and mix until you have a crumble consistency.
- Transfer 3/4 of the mixture into an 9” square cake tin lined with parchment paper. Press down with your hands or a spoon to make sure the base is even.
- Add the blueberries, sugar, cornflour, lemon juice and water to a saucepan. Mix and cook over a medium heat until the mixture starts to thicken a little.
- Take off the heat and pour onto the base.
- Sprinkle on top the remaining oat mixture and bake for 30-40 minutes.
- Leave to cool completely before slicing. Enjoy!
Notes
Nutrition
If you like these blueberry oat bars, you may also enjoy these recipes:
They look seriously delicious and I love that they are so loaded with berries.
Love berry treats 😀
These blueberry lemon breakfast bars look fantastic! I think I would have eaten at least five or six of them in one go and called it breakfast 😉
They are really moreish 😀
Blueberries and lemon sound like such an amazing combination!! ?
Thank you Marie 😀 Blueberry and lemon really is such a yummy cobo!
How long do these keep?
Store in the fridge for 3-4 days.
Bluberry & Lemon the best combination! These looking oozing and so delicious!
Hope you get to try it soon 😀
What’s the best way to determine your quantity of ingredients you do not have a food scale to measure grams? Thanks
They look amazing!!!! Just a thought for us in the states… I have seen lately in recipe a convert button/switch so we don’t have to figure out grams. Maybe something you can add for some of us! ☺️
Look amazing. Have you used frozen berries
Have any nutrivalues?
Thanks
Frozen blueberries would also work. You can use something like MyFitnessPal to workout the calories, etc. 🙂
Would frozen ones work?
Frozen berries would also work 🙂
Cornflour? Is that corn starch or cornmeal flour?
I think it’s cornstarch in the states. We call it cornflour in the UK 🙂
These Blueberry Oat Bars look absolutely delicious! The combination of juicy blueberries and wholesome oats is perfect for a guilt-free snack. I run a grocery store in the UK, and we often recommend oats and fresh fruits to our customers for healthy baking ideas like this. Can’t wait to try this recipe and maybe even share it with our customers. Thanks for the inspiration!