This healthy blueberry crumble that can be made with fresh or frozen blueberries and is topped with an oatmeal pecan crumble. It’s naturally sweetened, gluten-free + vegan.

This healthy blueberry crumble recipe is a breeze to whip up and if you keep frozen blueberries in the freezer like I do, you probably already have all the ingredients on hand!

Why You’ll Love This Recipe

• Healthy ingredients: No butter, white sugar and white flour needed!
• Easy to make: It’s like a blueberry pie, but much easier (and healthier) to make.
• Special diet-friendly: It’s naturally sweetened, vegan, dairy-free and gluten-free.

Ingredients Needed

Here’s everything you’ll need to make this tasty blueberry crisp:

• blueberries – I used frozen wild blueberries which are a bit smaller, have a deeper blue pigment, double the antioxidants and a more intense blueberry flavor. Of course regular frozen berries work too. No thawing required.
• vanilla – a nice flavor enhancer.
• old fashioned rolled oats – for the crumble topping.
• pecans – adds a little crunch to the topping.
• almond flour – we’re using almond flour to keep this recipe gluten-free for the crumble topping.
• maple syrup – pure maple syrup is the perfect natural sweetener to use because it is liquid and adds a perfect amount of sweetness.
• coconut oil – we’re using coconut oil instead of butter to keep this crumble vegan. I recommend using unrefined extra virgin coconut oil.
• cinnamon and sea salt – two baking essentials to add flavor.

How to Make

Prep: Begin by preheating your oven to 375°F. Also, grease or line your baking pan with parchment paper for easy removal and cleanup.

Add blueberries: Add blueberries to the dish and drizzle vanilla over top. Set aside.

Make crumble topping: In a large bowl, stir together oats, pecans, almond flour, maple syrup, coconut oil, cinnamon and sea salt.

Bake: Once combined, sprinkle the oatmeal pecan topping over the blueberries. Gently press the mixture down using the back of the spoon. Bake in preheated oven for about 30 minutes, or until topping has hardened and turned a lovely golden brown color.

Serve and enjoy: Cool for 10-20 minutes then serve warm with whipped topping or ice cream.

Can I Use Fresh Berries?

I know I call for frozen wild blueberries in this recipe, but you can definitely use regular frozen blueberries or fresh blueberries. I tend to use frozen berries most of the time because I always have them stocked in the freezer (and you don’t have to defrost them!), but during blueberry season I love making this crumble with fresh blueberries from the farmer’s market.

How to Thicken Blueberry Filling

The blueberries will release a little juice after cooking. I don’t mind a little liquid and like to keep the filling super simple but if you prefer a thicker filling you can combine the blueberries and vanilla with 2-3 Tablespoons of cornstarch or arrowroot powder before adding to the baking dish.

Notes & Substitutions

• Blueberries – As I mentioned above I love using frozen wild blueberries for this recipe, but if you don’t have any on hand no worries fresh blueberries will work just fine. Want to use a different fruit? Try my apple crisp or peach crumble or swap the blueberries for your favorite type of berry. Strawberries, raspberries, blackberries or cherries would all be delicious!
• Coconut oil – You can use melted vegan butter. Melted traditional butter works as well if you don’t need the crumble to be vegan.
• Pecans – If you’re not a fan of pecans you could try another chopped nut such as walnuts or almonds. To make the topping nut-free swap the pecans with additional oats.
• Almond flour – I haven’t tested this crisp with a different flour, but I have a feeling that all-purpose flour or gluten-free all-purpose flour will work just fine for the topping. If you try it, please let me know in the comments.
• Maple syrup – I absolutely love the taste of maple syrup with this recipe, but you could easily swap it for honey, coconut sugar or brown sugar.
• Add lemon – For a light citrus flavor you could add in some fresh lemon juice and/or lemon zest with the blueberries.
• Blueberry bars – Want to make blueberry crumble bars instead? Try these blueberry bars!

How to Serve Blueberry Crumble

This blueberry crumble is insanely good on it’s own so feel free to eat it without any toppings, but here are some additional ways to serve it up:

• ice cream – as an ice cream lover I think this crumble is delicious with a scoop of vanilla ice cream on top. Want a healthy option? Use banana ice cream!
• yogurt – add creaminess and protein by adding Greek yogurt as a topping! Pro tip: whip the yogurt in a food processor for a light and airy texture.
• whipped cream – can’t go wrong with classic whipped cream!
• coconut whip – looking for a dairy-free option? I love topping this blueberry crumble with coconut whipped cream!

Tips for Success

• Use quality ingredients: Always use high-quality, fresh or frozen blueberries for the best flavor. If using frozen, there’s no need to thaw them first.
• Customize your crumble: While the recipe suggests pecans, feel free to experiment with other nuts like almonds or walnuts for a different texture and flavor. You could also add shredded coconut, chia seeds, hemp seeds or some additional spices like nutmeg, cardamom or ground ginger to the crumble.
• Check your oats: Make sure you’re using old-fashioned rolled oats and not quick oats. The rolled oats will give a much better texture to the crumble.
• Monitor the bake time: Keep an eye on the crumble as it bakes. If you notice the topping browning too quickly, you can loosely cover it with aluminum foil to prevent over-browning.
• Let it rest: After baking, allow the crumble to cool for at least 10-20 minutes. This will help the filling set a bit and make it easier to serve.

How to Store This Blueberry Crumble

After allowing your blueberry crumble to cool, store it covered in an airtight container. Leftovers will store well at room temperature for 1-2 days or in the refrigerator for up to 5 days.

This crumble is delicious served cold, but I highly recommend reheating the leftovers in the oven or microwave.

More Blueberry Recipes to Try

• High Protein Blueberry Muffins
• Blueberry Oatmeal
• Blueberry Lemon Overnight Oats
• Blueberry Baked Oatmeal
• Blueberry Yogurt Muffins

Be sure to check out the full collection of healthy dessert recipes here on EBF!