These healthy blueberry crumble bars are made with almond flour, oat flour, sugar-free sweetener, juicy blueberries and sugar-free blueberry jam. Perfect for an easy, delicious and healthy dessert.
If you’re looking for a healthier blueberry dessert that isn’t “healthy,” you’ve come to the right place.
These Healthy Blueberry Crumble Bars have everything you want in a summer snack: a buttery crumb topping, a jammy blueberry filling, and just the right amount of sweetness. The best part? Made with almond flour, oat flour, sugar-free sweeteners, and less butter than traditional blueberry bars.
Think of it as a cross between blueberry pie and crumb cake. It’s light, rich in fiber, and much easier to make.
Why you’ll love this healthy blueberry crumble bar
There are many recipes for blueberry bars, but this version stands out for several reasons.
Made with almond flour and oat flour No refined sugars Lower in carbohydrates and higher in fiber than traditional blueberry bars Less butter than traditional crumble bars Packed with juicy blueberries Contains unsweetened blueberry jam for added flavor Easy for baking beginners
Whether you’re looking for a healthier dessert, an afternoon snack, or a meal prep treat, these bars tick all the boxes.
The secret to a better blueberry filling
Fresh blueberries are great on their own, but adding a little sugar-free blueberry jam takes the filling to the next level.
As the bars bake, the jam melts into the berries, creating a rich, rich filling similar to homemade blueberry pie. It also prevents the filling from becoming watery and provides beautifully organized slices.
The result is a layer of sweet, bright blueberries packed with real fruit flavor.
Healthy Blueberry Crumble Bars Recipe
material
Crust & crumble topping
blueberry filling
Instructions
Preheat oven to 350°F (175°C). Line a 9 x 13-inch baking dish with parchment paper. In a large bowl, whisk together almond flour, oat flour, sweetener, baking powder, salt, and oat fiber, if using. In a small bowl, whisk together the eggs and vanilla. Add egg mixture and cold butter cubes to dry ingredients. Use a pastry cutter, fork, or your fingers to bring everything together until a crumbly dough forms. Press about two-thirds of the mixture firmly into the bottom of the prepared baking dish. In a separate bowl, combine blueberries, sugar-free blueberry jam, cornstarch, lemon juice, lemon zest, and optional sweetener. Mix until evenly coated. Spread the blueberry mixture evenly over the dough. Sprinkle remaining crumble mixture on top. Bake for 35-40 minutes or until the topping is lightly golden brown and the filling is bubbling around the edges. Let cool completely before slicing. For the cleanest cuts, refrigerate for at least an hour.
Healthy Blueberry Crumble Bars (Gluten Free + No Sugar)
author:
Preparation time: 15 minutes
Cooking time: 40 minutes
Total time: 55 minutes
yield: 9-12 measures
diet: gluten free
Crust & crumble topping
blueberry filling
Instructions
Preheat oven to 350°F (175°C). Line a 9 x 13-inch baking dish with parchment paper. In a large bowl, whisk together almond flour, oat flour, sweetener, baking powder, salt, and oat fiber, if using. In a small bowl, whisk together the eggs and vanilla. Add egg mixture and cold butter cubes to dry ingredients. Use a pastry cutter, fork, or your fingers to bring everything together until a crumbly dough forms. Press about two-thirds of the mixture firmly into the bottom of the prepared baking dish. In a separate bowl, combine blueberries, sugar-free blueberry jam, cornstarch, lemon juice, lemon zest, and optional sweetener. Mix until evenly coated. Spread the blueberry mixture evenly over the dough. Sprinkle remaining crumble mixture on top. Bake for 35-40 minutes or until the topping is lightly golden and the filling is bubbling around the edges. Let cool completely before slicing. For the cleanest cuts, refrigerate for at least an hour.
Did you make this recipe?
Tips for the best blueberry crumble bars
Use fresh blueberries if possible: Fresh berries provide the best texture and prevent excess moisture in the filling.
Don’t forget the lemon juice. Lemon brightens up the blueberries and balances the sweetness beautifully.
Chill before cutting: As the bars cool, the filling will continue to harden. Chilling makes it easier to slice and serve.
Add Protein: Want to make these bars even more satisfying?
Replace 1/2 cup of oat flour with:
This creates a high-protein version that’s perfect for breakfast or snacking.
FAQ
Can I use frozen blueberries?
yes. If using frozen blueberries, do not thaw them first. You may need to add a teaspoon of cornstarch to absorb more moisture.
Are these blueberry bars gluten-free?
Maybe so. Just use certified gluten-free oat flour.
What is the best sugar-free sweetener?
Monk fruit sweetener and allulose are both effective. Allulose creates a softer texture, and monk fruit provides a sweetness closer to traditional sugar.
How should I store it?
Store in an airtight container in the refrigerator for up to 5 days.
You can also freeze it for up to 3 months.
final thoughts
These healthy blueberry crumble bars prove you don’t need tons of sugar or butter to create a decadent dessert.
Packed with juicy blueberries, sugar-free blueberry jam, soft almond oat crumble, and tons of fresh berry flavor, it’s perfect for summer get-togethers, meal prep, or to satisfy your sweet tooth without the sugar crash.
One bite and you’ll forget it’s a healthier version.
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