Keto Blueberry Crisp

This keto blueberry crisp is the kind of easy, sugar-free dessert you'll want to make all spring and summer long. It has a juicy blueberry filling, a buttery almond flour crumble topping, and just the right amount of lemon to brighten every bite.

It's everything you love about a classic blueberry crisp, minus the sugar and gluten.

I love recipes like this because they prove that staying keto does not mean saying goodbye to fruit desserts.

Blueberries are one of my favorite berries to bake with because they become wonderfully sweet and saucy in the oven, especially when paired with lemon zest and a low-carb sweetener.

This low carb blueberry crisp is simple enough for a weeknight treat but pretty enough to serve when you have company.

Add a scoop of keto vanilla ice cream or a dollop of sugar-free whipped cream, and you have a dessert that tastes far more special than the effort it takes to make.

It's also gluten-free, grain-free, sugar-free, and made with easy-to-find ingredients.

Looking for more low carb blueberry desserts? Be sure to also check out our keto blueberry cheesecake and our full collection of keto blueberry recipes.

Why You'll Love This Keto Blueberry Crisp

There is something so comforting about a warm fruit crisp straight from the oven. The berries bubble up beautifully, the topping turns golden, and the whole kitchen smells amazing.

This keto blueberry crumble is especially nice because it does not require a mixer, rolling pin, or pie crust. It gives you all the flavor of a homemade blueberry cobbler or crisp without the extra steps.

You'll love that it is:

• Sugar-free and keto-friendly
• Gluten-free and grain-free
• Made with fresh or frozen blueberries
• Topped with a buttery almond flour crumble
• Easy to prepare in one baking dish
• Perfect with keto ice cream or whipped cream
• Great for spring, summer, holidays, or casual family dinners

It's a quick keto blueberry dessert that feels comforting without kicking you out of ketosis.

Low-Carb Blueberry Crisp

This low carb blueberry crisp uses blueberries as the base and an almond flour topping instead of a traditional flour and oat crumble.

Classic blueberry crisp recipes usually include sugar, wheat flour, and oats. While delicious, those ingredients can quickly raise the carb count.

This version keeps things low in carbs by using a granulated sugar substitute, almond flour, chopped walnuts, and butter to create a crisp topping that bakes up golden and crumbly.

The result is a sugar-free blueberry crisp that still has the texture and flavor you expect from a classic fruit dessert.

Is Blueberry Crisp Keto?

A traditional blueberry crisp is usually not keto because it is made with sugar, flour, and often oats. This recipe makes a keto blueberry crisp by swapping those ingredients for low-carb options.

The blueberry filling is sweetened with a sugar substitute, and the crisp topping is made with almond flour, walnuts, spices, and cold butter.

Blueberries do contain natural carbs, but they can fit into a keto lifestyle when enjoyed in moderation. This recipe is portioned to give you the flavor of a fruit dessert while keeping the carbs much lower than a traditional crisp.

Ingredients Needed

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The following are the ingredients needed to make this keto-friendly blueberry crisp. Note that the full recipe card is at the bottom of the page.

For The Sugar-Free Blueberry Filling

• Fresh (or frozen) blueberries
• Granulated sugar substitute
• Lemon juice
• Lemon zest
• Sea salt

For The Low-Carb Crisp Topping

• Almond flour
• Cinnamon powder
• Ground ginger
• Nutmeg powder
• Cold unsalted butter
• Chopped walnuts

You will also need an 8-inch x 8-inch baking dish like this one to bake your crisp in.

Fresh Or Frozen Blueberries

You can make this keto blueberry crisp with either fresh or frozen blueberries.

Fresh blueberries will give you the best texture and presentation. They bake up juicy without releasing too much extra liquid, making them my first choice when they are in season.

Frozen blueberries also work, but they may release more moisture as they bake.

For best results, use them straight from the freezer and do not thaw them first. You may need to bake the crisp a little longer until the filling is bubbling and the topping is golden.

How To Make Keto Blueberry Crisp

Making this low carb blueberry dessert could not be easier.

Start by preheating your oven and greasing an 8-inch baking dish with butter.

In a large bowl, toss the blueberries with the sugar substitute, lemon juice, lemon zest, and a little sea salt. The lemon adds brightness and helps balance the sweetness of the berries.

Add the blueberry mixture to the prepared baking dish and spread it out evenly.

Next, make the low carb crisp topping. In a separate bowl, combine the almond flour, chopped walnuts, sugar substitute, cinnamon, ginger, nutmeg, and salt.

Cut the cold butter into small pieces and add it to the dry ingredients.

Using your fingers, press the butter into the almond flour mixture until it forms a crumbly texture with small pea-sized pieces. The cold butter is important because it helps create that crisp, buttery topping once baked.

Sprinkle the almond flour crumble over the blueberries. Cover the dish with foil and bake until the blueberry filling begins to bubble. Then remove the foil and continue baking until the topping is golden brown.

Serve warm with keto whipped cream or low-carb vanilla ice cream.

Tips For The Best Keto Blueberry Crumble

Use cold butter for the topping. Soft or melted butter will not give you the same crumbly texture.

Do not skip the lemon zest. It adds a fresh flavor that makes the blueberries taste even better.

Bake until the filling bubbles. This tells you the blueberries have softened and released their juices.

Let the crisp rest before serving. A few minutes of cooling helps the filling thicken slightly.

Use finely ground almond flour. It gives the topping a better texture than almond meal.

Chop the walnuts small. This helps them blend evenly into the crumble topping.

Best Sugar Substitute Options

For this keto blueberry crisp recipe, I recommend using a granulated sugar substitute that measures cup-for-cup like sugar. This keeps the recipe easy and helps the topping bake correctly.

My favorite options include monk fruit blends, erythritol blends, or allulose blends. Any of these can work well in both the blueberry filling and the almond flour topping.

If you choose a stevia-based sweetener it is twice as sweet, so be sure to adjust the amount by half.

The goal is to sweeten the blueberries without covering up their natural flavor.

Can I Make This Blueberry Crisp Ahead Of Time?

Yes, this keto blueberry crisp can be made ahead of time, which makes it a great option for gatherings or holiday meals.

For the best texture, I recommend preparing the blueberry filling and the crumble topping separately, then storing them in the refrigerator until you are ready to bake. This keeps the topping from getting too soft before it goes into the oven.

You can also bake the crisp ahead of time and reheat it before serving, but the topping will be crispiest the day it is baked.

How To Store Low Carb Blueberry Crisp

Store any leftovers covered in the refrigerator for up to three days.

To reheat, place individual servings in the microwave or warm the baking dish in the oven until heated through. The oven is the best option if you want to bring back some of the texture in the topping.

This blueberry crisp can also be frozen for up to three weeks. For best results, allow it to cool completely before wrapping it well and freezing. Thaw it in the refrigerator before reheating.

More Keto Cobbler & Crisp Recipes To Try

If you enjoy easy fruit-style keto desserts, you'll want to try these next:

• Keto "apple" cranberry cobbler
• Keto "apple" cobbler
• Keto strawberry rhubarb cobbler
• Keto cranberry cobbler
• Keto blackberry cobbler

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