Low-Carb Blueberry Crumb Bars
When it comes to satisfying your sweet tooth without derailing your healthy eating goals, these Low-Carb Blueberry Crumb Bars are a game-changer. Bursting with juicy blueberries and topped with a crumbly, buttery layer, they’re perfect for breakfast, a snack, or even dessert. The best part? They’re easy to make and use wholesome ingredients that won’t spike your blood sugar. So, let’s dive into the delightful world of these low-carb treats!
What Makes This Recipe Special

These Low-Carb Blueberry Crumb Bars are not only delicious but also incredibly versatile. The combination of fresh or frozen blueberries provides a burst of flavor and nutrients, while the almond flour keeps the bars light and low in carbs. The use of sugar-free sweeteners ensures that you can indulge guilt-free. Plus, the crumbly topping gives a satisfying texture that perfectly complements the fruity filling. These bars are a fantastic option for anyone looking to enjoy a sweet treat without compromising their dietary goals.
Ingredients at a Glance
- 3 cups fresh or frozen blueberries
- 1 tbsp sugar-free granulated sweetener
- 1 tbsp tapioca flour
- Pinch sea salt
- 3 cups almond flour
- ¾ cup coconut oil or butter, melted
- ¾ cup sugar-free sweetener
- Pinch sea salt
Gear Checklist
- 9×9-inch baking dish: Perfect size for these crumb bars.
- Mixing bowls: For combining your ingredients smoothly.
- Spatula: Ideal for spreading the mixture evenly.
- Measuring cups and spoons: Essential for accurate measurements.
Cook Low-Carb Blueberry Crumb Bars Like This

Step 1: Prepare the Blueberry Filling
In a medium bowl, combine the fresh or frozen blueberries with the sugar-free sweetener, tapioca flour, and a pinch of sea salt. Gently toss the mixture to coat the blueberries evenly. Set aside to let the flavors meld while you prepare the crust.
Step 2: Make the Crust and Topping
In a large mixing bowl, combine the almond flour, melted coconut oil or butter, sugar-free sweetener, and another pinch of sea salt. Stir until the mixture resembles a crumbly dough. Reserve about one cup of this mixture for the topping.
Step 3: Assemble the Bars
Preheat your oven to 350°F (175°C). Grease your 9×9-inch baking dish with a little coconut oil or butter. Press the remaining dough mixture firmly into the bottom of the prepared baking dish, creating an even layer.
Step 4: Add the Blueberry Filling
Spread the blueberry filling evenly over the crust layer. Make sure to distribute the blueberries uniformly for a balanced flavor in every bite.
Step 5: Crumble the Topping
Sprinkle the reserved crumb mixture evenly over the blueberry filling, ensuring it covers the berries well.
Step 6: Bake
Bake the bars in the preheated oven for about 30-35 minutes, or until the topping is golden brown and the blueberries are bubbly.
Step 7: Cool and Serve
Once baked, remove the bars from the oven and let them cool in the pan for at least 20 minutes. This cooling time is crucial as it allows the filling to set, making it easier to cut into squares. Once cooled, slice into bars and enjoy!
Substitutions by Category

- Sweeteners: You can use erythritol, stevia, or monk fruit sweetener in place of the sugar-free sweetener.
- Fats: If you prefer, you can substitute the coconut oil with unsalted butter or ghee.
- Flours: For a nut-free version, consider using oat flour or a gluten-free all-purpose blend.
What Could Go Wrong
- Too soggy filling: If you use too many blueberries or don’t let the bars cool enough before cutting, the filling can become runny.
- Crust won’t hold together: Make sure to press the crust mixture firmly into the baking dish to avoid crumbling.
- Overbaked topping: Keep an eye on the bars as they bake; every oven is different, and you want a golden brown topping, not burnt.
Make-Ahead & Storage
These Low-Carb Blueberry Crumb Bars are perfect for meal prep! You can make them a day in advance and store them in the refrigerator for up to five days. For longer storage, cut the bars and place them in an airtight container in the freezer. They can last up to three months in the freezer. Just thaw them in the fridge overnight before enjoying!
Reader Questions
Can I use other fruits instead of blueberries?
Absolutely! While blueberries are the star of this recipe, you can substitute them with raspberries, strawberries, or blackberries. Just keep in mind that different fruits may require slight adjustments in sweetness.
How can I make these bars more filling?
To make these Low-Carb Blueberry Crumb Bars more filling, consider adding a scoop of your favorite protein powder to the crust mixture. This will not only enhance the nutritional profile but also keep you satisfied for longer.
Can I double the recipe?
Yes, you can easily double the recipe. Simply use a larger baking dish, such as a 9×13-inch pan, and adjust the baking time as needed. Just be sure to keep an eye on the topping to prevent overbaking.
What’s the best way to reheat the bars?
The best way to reheat these Low-Carb Blueberry Crumb Bars is to place them in the microwave for about 10-15 seconds. If you prefer a crispy topping, you can also pop them in the oven at 350°F (175°C) for a few minutes.
Next Steps
Now that you have a delightful recipe for Low-Carb Blueberry Crumb Bars, it’s time to gather your ingredients and get baking! Whether you enjoy them fresh out of the oven or chilled from the fridge, these bars are sure to satisfy your sweet cravings without any guilt. Share your creations on social media, and don’t forget to tag us! Happy baking!
Indulging in these Low-Carb Blueberry Crumb Bars is not just a treat for your taste buds; it’s a step towards a healthier lifestyle. With every bite, you’ll feel good knowing you’re enjoying a snack that’s both delicious and nutritious. So, roll up your sleeves and get ready to whip up a batch of these scrumptious bars today!

Low-Carb Blueberry Crumb Bars
Ingredients
Equipment
Method
- In a medium bowl, combine the fresh or frozen blueberries with the sugar-free sweetener, tapioca flour, and a pinch of sea salt. Gently toss the mixture to coat the blueberries evenly. Set aside to let the flavors meld while you prepare the crust.
- In a large mixing bowl, combine the almond flour, melted coconut oil or butter, sugar-free sweetener, and another pinch of sea salt. Stir until the mixture resembles a crumbly dough. Reserve about one cup of this mixture for the topping.
- Preheat your oven to 350°F (175°C). Grease your 9x9-inch baking dish with a little coconut oil or butter. Press the remaining dough mixture firmly into the bottom of the prepared baking dish, creating an even layer.
- Spread the blueberry filling evenly over the crust layer. Make sure to distribute the blueberries uniformly for a balanced flavor in every bite.
- Sprinkle the reserved crumb mixture evenly over the blueberry filling, ensuring it covers the berries well.
- Bake the bars in the preheated oven for about 30-35 minutes, or until the topping is golden brown and the blueberries are bubbly.
- Once baked, remove the bars from the oven and let them cool in the pan for at least 20 minutes. This cooling time is crucial as it allows the filling to set, making it easier to cut into squares. Once cooled, slice into bars and enjoy!
Notes
- For a nut-free version, consider using oat flour or a gluten-free all-purpose blend.
- These bars can be made a day in advance and stored in the refrigerator for up to five days.
- To reheat, microwave for about 10-15 seconds or place in the oven at 350°F (175°C) for a few minutes.
