How many calories are in this healthy blueberry crumble?

Each serving contains approximately 155 calories. This is significantly lower than a traditional butter and sugar crumble, which can easily reach 350 to 450 calories per serving.

Can I use frozen blueberries instead of fresh?

Absolutely. Frozen blueberries work just as well and sometimes better, since freezing breaks down the cell walls slightly and helps them release more of that gorgeous jammy juice. Add them straight from the freezer without thawing first.

Is this recipe gluten-free?

It can be made fully gluten-free by choosing certified gluten-free rolled oats. Standard oats are naturally gluten-free but can be cross-contaminated during processing, so the certification matters if you have coeliac disease or a serious intolerance.

Can I make this crumble vegan?

It is already vegan as written. Coconut oil replaces butter and maple syrup replaces honey, so no animal products are involved in the recipe itself. Just make sure any yoghurt or ice cream you serve it with is also plant-based.

Can I use a different fruit instead of blueberries?

Yes, this crumble topping works wonderfully over raspberries, blackberries, peaches or a mix of mixed berries. Adjust the maple syrup quantity in the filling depending on how sweet or tart your chosen fruit is.

How do I stop the crumble topping from going soggy?

Two things help here. First, make sure the coconut oil is only slightly melted and not hot when you add it to the oats. Second, bake the crumble uncovered for most of the cooking time so moisture can escape. Covering it traps steam and softens the topping.

Healthy Blueberry Crumble Low Calorie Recipe with Oat and Almond Topping

Name: Healthy Blueberry Crumble Low Calorie Recipe with Oat and Almond Topping
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Yield: 6 servings
Cuisine: American
Ingredients: 500 g fresh or frozen blueberries (no need to thaw if frozen); 1 tbsp pure maple syrup (for the filling); 1 tsp arrowroot powder (or cornflour works too); 1 tsp lemon zest (from about half a lemon); 1 tbsp lemon juice (freshly squeezed); 100 g rolled oats (use certified gluten-free oats if needed); 40 g ground almonds (also sold as almond flour); 2 tbsp pure maple syrup (for the crumble topping); 2 tbsp coconut oil (melted and cooled slightly); 1 tsp ground cinnamon; 0.5 tsp vanilla extract; 1 pinch fine sea salt

Gluten-FreeVeganDairy-FreeRefined Sugar-FreeEgg-Free

Prep Time10 min

Servings6

Calories155 kcal

Health Score7/10

↓ Jump to recipe

Healthy Blueberry Crumble Low Calorie Recipe with Oat and Almond Topping

This healthy blueberry crumble is the kind of recipe that makes you feel genuinely good about having dessert. Each serving comes in under 160 calories, uses no refined sugar, and still delivers that satisfying contrast of bubbling jammy fruit beneath a crisp, golden topping. It is designed for anyone who loves a classic crumble but wants something lighter on the waistline without feeling like they are eating a compromise. Busy weeknight, lazy Sunday, post-dinner treat, breakfast with a spoonful of Greek yoghurt on top. This one fits all of those moments comfortably.

The filling keeps things beautifully simple. Fresh or frozen blueberries get tossed with a little lemon zest, lemon juice, a teaspoon of pure maple syrup, and a small amount of arrowroot powder to help the juices thicken as they bake. Blueberries are naturally sweet when roasted, so they need very little help. The crumble topping is where the real magic happens. Rolled oats bring fibre and that chewy bite, ground almonds add a subtle nuttiness and healthy fats, a touch of coconut oil helps everything crisp up beautifully, and a drizzle of maple syrup brings just enough sweetness without tipping the calorie count over the edge. A pinch of cinnamon and a tiny amount of vanilla extract tie it all together into something that smells absolutely incredible coming out of the oven.

Texture-wise, this crumble hits every note you want. The blueberry base turns glossy and almost jammy, with some berries bursting completely and others staying just intact enough to give you a little pop. The topping bakes into crunchy golden clusters with a slight chew from the oats. Serve it warm straight from the dish with a generous spoonful of plain low-fat Greek yoghurt for a high-protein finish, or with a small scoop of vanilla frozen yoghurt if you want something a little more indulgent. A scattering of fresh blueberries on top just before serving adds a lovely freshness against the warm baked fruit underneath. It is just as good eaten at room temperature the next morning, honestly better in some ways once the flavours have had time to settle.

From a nutritional standpoint, this recipe is a genuine upgrade on a traditional crumble. A classic version can easily clock in at 350 to 450 calories per serving with significant amounts of refined sugar and butter. This version comes in at around 155 calories per serving, with over 4 grams of fibre thanks to the blueberries and oats, and uses coconut oil and almonds for a more nourishing fat profile. Blueberries themselves are one of the most antioxidant-rich fruits you can eat, packed with anthocyanins that support cardiovascular health and cognitive function. The oats contribute beta-glucan, a soluble fibre linked to healthy cholesterol levels. Maple syrup, used sparingly here, has a lower glycaemic impact than refined white sugar and brings trace minerals like manganese and zinc. The result is a dessert that your body actually appreciates, not just your taste buds.

Ingredients

Serves:6

500 g fresh or frozen blueberries (no need to thaw if frozen)
1 tbsp pure maple syrup (for the filling)
1 tsp arrowroot powder (or cornflour works too)
1 tsp lemon zest (from about half a lemon)
1 tbsp lemon juice (freshly squeezed)
100 g rolled oats (use certified gluten-free oats if needed)
40 g ground almonds (also sold as almond flour)
2 tbsp pure maple syrup (for the crumble topping)
2 tbsp coconut oil (melted and cooled slightly)
1 tsp ground cinnamon
0.5 tsp vanilla extract
1 pinch fine sea salt

Instructions

1
Preheat your oven to 180 degrees Celsius, or 160 degrees fan. Lightly grease a medium baking dish, roughly 20 by 28 centimetres, with a tiny amount of coconut oil or cooking spray.
A ceramic or glass dish works best here as it distributes heat more gently and prevents the fruit from catching on the bottom.
2
Add the blueberries to the baking dish. Sprinkle over the arrowroot powder and toss to coat. Pour over the lemon juice, add the lemon zest, and drizzle with one tablespoon of maple syrup. Stir everything together gently so the berries are evenly coated.
If your blueberries are very sweet, you can skip the maple syrup in the filling entirely and save a few more calories.
3
In a medium mixing bowl, combine the rolled oats, ground almonds, cinnamon, and sea salt. Stir to mix them evenly. Add the melted coconut oil, two tablespoons of maple syrup, and vanilla extract. Mix well until the oats clump together and look like a rough crumble.
Do not overmix. You want uneven clumps, not a paste. Those clumps are what create the crunchy clusters in the final bake.
4
Scatter the crumble topping evenly over the blueberry filling. Spread it so you have an even layer, but resist the urge to press it down flat. Leaving it a little rough and uneven gives you more texture once baked.
5
Bake for 28 to 32 minutes, until the topping is golden and the blueberry juices are bubbling up around the edges. If the topping browns too quickly, loosely tent the dish with foil for the last 10 minutes.
The bubbling around the edges is your key signal that the fruit is fully cooked and the juices have thickened properly.
6
Remove from the oven and allow to rest for 5 minutes before serving. This lets the juices settle slightly so it is easier to scoop and serve without everything running everywhere.
Serve with a spoonful of plain low-fat Greek yoghurt or a small scoop of vanilla frozen yoghurt for a little extra protein and creaminess.

Nutrition per serving

155kcal

Calories

3.5g

Protein

22g

Carbs

6.5g

Fat

4.2g

Fibre

10g

Sugar

45mg

Sodium

Pro Tips

✓
Frozen blueberries work brilliantly here and are often more economical than fresh. Add them straight from frozen without thawing to avoid excess liquid.
✓
For extra crunch, stir in one tablespoon of flaked almonds or pumpkin seeds into the crumble topping before baking.
✓
Taste your blueberries before assembling. Very tart berries may benefit from a tiny extra drizzle of maple syrup in the filling.
✓
The crumble topping can be made up to three days ahead and stored in an airtight container in the fridge, ready to scatter over fresh fruit whenever you want a quick dessert.
✓
Do not skip the arrowroot powder in the filling. It is what transforms the blueberry juices into a thick, glossy sauce rather than a watery puddle.

Frequently Asked Questions

Variations

•
Blueberry and Lemon Crumble
Double the lemon zest in the filling and add half a teaspoon of lemon extract to the crumble topping. The result is bright, zingy and incredibly refreshing.
•
Mixed Berry Low Calorie Crumble
Replace half the blueberries with raspberries or blackberries for a deeper, more complex berry flavour. The tartness of raspberries balances the sweetness of the blueberries beautifully.
•
Spiced Blueberry Crumble
Add a quarter teaspoon each of ground ginger and ground cardamom to the crumble topping alongside the cinnamon. It gives the dish a warming, almost chai-like quality that works especially well in autumn.
•
High Protein Blueberry Crumble
Stir two tablespoons of unflavoured or vanilla protein powder into the crumble topping mixture. It adds a few grams of protein per serving without affecting the texture noticeably.

Substitutions

•
Coconut oil → Melted unsalted butter or a neutral-tasting light olive oil (Butter will make the crumble slightly richer and will no longer be dairy-free. Light olive oil produces a slightly less crisp topping but still works well.)
•
Maple syrup → Honey or agave syrup (Honey gives a floral sweetness and works in equal quantities. Agave has a lower glycaemic index and a more neutral flavour. Note that honey makes the recipe no longer vegan.)
•
Ground almonds → Oat flour or sunflower seed flour (Either works as a nut-free alternative. Sunflower seed flour has a slightly earthier flavour but creates a similar texture in the crumble topping.)
•
Arrowroot powder → Cornflour or tapioca starch (Use the same quantity. All three act as thickeners for the blueberry juices. Arrowroot gives the clearest, glossiest finish but cornflour is more widely available.)
•
Rolled oats → Quinoa flakes (A good grain-free option that gives a slightly lighter crumble with a milder flavour. Use the same quantity as the oats.)

🧊 Storage

Store leftover crumble in an airtight container in the fridge for up to 3 days. Reheat individual portions in the microwave for 60 to 90 seconds or warm the whole dish in the oven at 160 degrees Celsius for about 10 minutes. The topping will soften slightly on day two but is still delicious.

📅 Make Ahead

You can assemble the entire dish, fruit filling and crumble topping, up to 24 hours ahead and keep it covered in the fridge unbaked. When ready to serve, bake straight from the fridge and add 5 minutes to the cooking time. Alternatively, prepare the crumble topping up to 3 days in advance and store it separately in the fridge.