This healthy gluten-free blueberry crisp is naturally sweetened with maple syrup, dairy-free, and topped with a crispy almond-oat crumble. Made with fresh or frozen blueberries, coconut oil instead of butter, and no refined sugar, it's the perfect summer dessert - easy enough for a weeknight and impressive enough for guests.
A Quick Look At This Blueberry Oat Crisp
- ✅ Recipe Name: Healthy Gluten-Free Blueberry Crisp (Dairy-Free, Naturally Sweetened)
- 🕒 Ready In: 55 minutes (10 min prep + 45 min bake)
- 👪 Serves: 10 (easily halved or doubled in a 9x13" dish)
- 🍽 Calories: ~233 per serving
- 🥣 Main Ingredients: Fresh or frozen blueberries, rolled oats, almond flour, maple syrup, coconut oil, coconut sugar
- 📖 Dietary Info: Gluten-free, dairy-free, refined sugar-free, vegan (nut-free with oat flour swap)
- 🫙 Make-Ahead & Storage: Assemble up to 24 hours ahead; keeps 3 days in the fridge
- ⭐ Why You'll Love It: Tastes like a classic blueberry crisp but made without butter, refined flour, or brown sugar - no one ever guesses it's actually healthy.
SUMMARIZE & SAVE THIS CONTENT ON
Fruit crisp is genuinely my favorite dessert - more than cake, more than pie, more than ice cream on its own. There's something about warm, jammy fruit under a crispy, craveable topping that I can't get over. I've made every version I can think of - my Healthy Peach Crisp, my Healthy Blackberry Crumble, my Strawberry Oatmeal Crumble - but this gluten-free blueberry crisp is the one I make the most, especially in peak summer when blueberries are at their best.
What sets it apart is the almond-oat crumble. No butter, no refined sugar, no gluten - just maple syrup, coconut oil, and almond flour, which gives the topping an almost shortbread-like crunch that stays crisp for days (most oat crisps don't). It's naturally dairy-free and vegan-friendly, and honestly? No one has ever guessed it's gluten-free until I've told them.
Serve it warm with vanilla ice cream or coconut whipped cream. And when apple season rolls around, my gluten-free Healthy Apple Crisp is the next one in your rotation.
Jump to:
- A Quick Look At This Blueberry Oat Crisp
- Why You'll Love This Recipe
- Ingredients You'll Need
- Ingredient Substitutions & Variations
- How to Make Gluten-Free Blueberry Crisp (Step-by-Step)
- Video Tutorial (Step-by-Step)
- Tips + Notes From My Kitchen
- Can You Use Frozen Blueberries?
- Serving Suggestions
- How to Store & Make Ahead
- Frequently Asked Recipe Questions
- More Berry Crumble Recipes to Try
- 📖 Recipe
- 💬 Comments
Why You'll Love This Recipe
- Crispier than any oat-only crumble. Almond flour gives the topping a shortbread-like crunch that stays crisp for days.
- No butter or refined sugar. Just maple syrup, coconut oil, and almond flour - a healthy dessert that still tastes like dessert.
- Works with frozen blueberries. No thawing needed.
- Gluten-free, dairy-free, and vegan. Works for almost every diet.
- One bowl, ten minutes of prep. Mix the filling, mix the topping, bake.
Ingredients You'll Need
For The Blueberry Filling
- Blueberries - Fresh or frozen, both work. Fresh ones are juicier, frozen ones release slightly more liquid, but the starch handles it. If you have extra, my healthy blueberry crumble bars are the handheld version of this recipe.
- Coconut sugar - Adds a little sweetness and a subtle caramel flavor. Skip it if your berries are already sweet.
- Lemon juice and zest - Brightens the filling and keeps the blueberries from tasting flat.
- Cornstarch - Thickens the juices into a jammy filling instead of a soupy one. Arrowroot or tapioca starch works too.
- Vanilla extract - Deepens the flavor. A small amount goes a long way.
The Oatmeal Crisp Topping
- Rolled oats - Use certified gluten-free old-fashioned oats. Skip quick oats (they turn mushy) and steel-cut (they stay raw).
- Almond flour - The secret to a crispier crumble. It gives the topping an almost shortbread texture and keeps it crisp even on day two. It's the same flour I use in my healthy strawberry oatmeal crumble bars.
- Walnuts, pecans, or almonds - Optional, but they add a great crunch. Leave them out to make it nut-free.
- Maple syrup - Sweetens the topping and helps it caramelize as it bakes.
- Coconut oil - Makes the crumble crispy on the outside and tender inside. Melted butter or vegan butter works if you'd rather.
- Cinnamon and salt - A small amount of each. Cinnamon adds warmth; salt balances the sweetness.
See recipe card for quantities.
Ingredient Substitutions & Variations
- Coconut oil: Use melted butter or vegan butter, same amount.
- Make it nut-free: Swap the almond flour for oat flour (same amount) and leave out the nuts.
- Coconut sugar: Brown sugar works; use the same amount.
- Cornstarch: Arrowroot or tapioca starch, same amount.
- Mixed berry crisp: Swap up to half the blueberries for raspberries, blackberries, or strawberries, or try my healthy mixed berry crumble.
- Make it a crumble bar: You'll need a shortbread base, too. My healthy blueberry crumble bars have the full recipe.
How to Make Gluten-Free Blueberry Crisp (Step-by-Step)
- Step 1: Toss the blueberries with coconut sugar, lemon juice, zest, vanilla, and cornstarch.
- Step 2: Spread the blueberries in a greased baking dish.
- Step 3: Mix the oats, almond flour, walnuts, salt, and cinnamon. Stir in the maple syrup, melted coconut oil, and vanilla until it clumps.
- Step 4: Sprinkle the crumble over the blueberries.
- Step 5: Bake at 350°F for 40-48 minutes, until golden and bubbly.
Video Tutorial (Step-by-Step)
Tips + Notes From My Kitchen
- Don't thaw frozen blueberries. Toss them straight from the freezer with the starch and lemon juice. Thawing makes the filling watery and washes out the color.
- Let it cool for 10 minutes before serving. The filling looks soupy out of the oven, but it thickens as it cools into a jammy texture.
- Don't swap the almond flour for coconut flour. Coconut flour absorbs way more liquid and turns the topping dry and dense. Use oat flour instead if you need a swap.
Can You Use Frozen Blueberries?
Yes, frozen blueberries work just as well as fresh. Honestly, they're often picked riper than the fresh ones at the grocery store, so the flavor can be even better. Add them straight from the freezer - don't thaw them first, or the filling turns watery.
Fresh blueberries give you a slightly jammier filling and hold their shape a bit better. Either way, use whatever you have on hand.
Wild blueberries work too - they're smaller, a little tarter, and pack more flavor per berry.
Serving Suggestions
Warm from the oven is the move. Here's what I actually serve it with:
- Vanilla ice cream. The classic. Cold + warm is the whole point. I love my homemade cottage cheese ice cream for extra protein.
- Coconut whipped cream. My go-to for keeping it fully dairy-free.
- Plain Greek yogurt. If I'm eating leftovers for breakfast (no judgment).
- A drizzle of extra maple syrup. For anyone in the family who wants it sweeter.
How to Store & Make Ahead
- Fridge: Cover the baking dish with foil or transfer to an airtight container. It keeps for up to 3 days.
- Freezer: Bake and cool completely, then freeze for up to 3 months. Thaw overnight in the fridge before reheating.
- Reheating: Warm the whole dish in a 350°F oven for 10-15 minutes, or microwave a single serving in 15-second bursts until just heated through.
- Make ahead: Assemble the whole crisp up to 24 hours in advance and refrigerate, covered. Bake straight from the fridge and add 5-8 minutes to the bake time.
Frequently Asked Recipe Questions
Yes, this is one of the healthier blueberry crisp recipes you'll find. It's naturally sweetened with maple syrup and coconut sugar (no refined sugar), made with coconut oil instead of butter, and is gluten-free and dairy-free. Each serving has about 233 calories and 4g of fiber.
Yes. Add them straight from the freezer without thawing. The bake time stays the same.
A watery blueberry crisp is usually caused by thawed berries or not enough starch. Let it cool for at least 10 minutes after baking - the cornstarch sets as it cools and the filling thickens into a jammy texture.
Oat flour works as a 1:1 swap - the crumble will be slightly softer but still crispy. Don't use coconut flour; it absorbs too much liquid and turns the topping dry and dense.
Yes. Assemble it up to 24 hours ahead and refrigerate, covered. Bake straight from the fridge and add 5-8 minutes to the bake time.
More Berry Crumble Recipes to Try
If you loved this healthy blueberry crisp, here are a few more of my favorite recipes I make on repeat:
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📖 Recipe
Healthy Gluten-Free Blueberry Crisp
Ingredients
The Blueberry Filling:
- 6 cups fresh blueberries (about 3 pints), fresh is best (frozen works too)
- 3 tablespoon coconut sugar, or brown sugar
- 1 tablespoon fresh lemon juice
- ½ teaspoon lemon zest
- ½ teaspoon vanilla extract
- ¼ teaspoon ground cinnamon, optional
- 2 tablespoon cornstarch, arrowroot, or tapioca starch
The Oatmeal Crisp:
- 1 cup old fashion rolled oats, gluten-free certified
- ⅔ cup almond flour, spooned and leveled
- ½ cup walnuts, almonds, or pecans (optional), roughly chopped with bigger pieces
- ½ teaspoon salt
- ¼ teaspoon ground cinnamon
- ½ cup pure maple syrup
- ¼ cup melted coconut oil
- 1 teaspoon pure vanilla extract
Instructions
- Preheat. Heat the oven to 350°F and lightly grease a 9×9-inch baking dish, 9-inch pie dish, or 9-inch skillet with nonstick spray.
- Make the filling. In a large bowl, toss the blueberries with coconut sugar, lemon juice, lemon zest, vanilla, and cornstarch until coated. Spread into the greased dish.
- Make the crumble. In the same bowl, stir together the oats, almond flour, walnuts (if using), salt, and cinnamon. Pour in the maple syrup, melted coconut oil, and vanilla, and mix with your hands until the topping forms clumps.
- Assemble. Sprinkle the crumble evenly over the blueberries.
- Bake. Bake for 40-48 minutes, until the topping is golden and the blueberries are bubbling.
- Cool and serve. Let cool for 10-15 minutes before serving. Best enjoyed warm with vanilla ice cream.
Video
Notes
Nutrition
Recipe tested and developed by Tati Chermayeff, creator of Healthful Blondie - where classic comfort foods get a wholesome, everyday twist. A former collegiate athlete and recipe developer, Tati is known for turning classic dessert recipes into balanced, feel-good favorites.
Carrie Pike says
Outstanding. No changes needed.
Tati Chermayeff says
Hi Carrie - So happy to hear that! Blueberry crisp is such a classic and yummy dessert 🙂
Wanda says
Loved it. Do yourself a favor and follow recipe exactly. Love recommendation to leave walnut chunks on later side.