Keto Strawberry Rhubarb Crumble is the perfect balance of tart and sweet, making it a standout dessert for warm weather. This recipe delivers a rich, buttery topping with juicy fruit underneath while keeping carbs low. If you love a low carb rhubarb crisp, this version brings all the flavor without the sugar. Plus, it comes together quickly with simple ingredients you likely already have. Whether you need a gluten-free dessert for guests or a quick family treat, this crumble checks every box with ease and taste.
Story
Every spring, Keto Strawberry Rhubarb Crumble becomes a staple in my kitchen because it captures the season’s freshest flavors in one dish. I remember the first time I paired strawberries with rhubarb; the contrast created something truly amazing . Since then, I’ve refined this Keto Strawberry Rhubarb Crumble to make it simple, reliable, and satisfying. Not only does it deliver that classic comfort dessert feel, but it also fits perfectly into a low-carb lifestyle. Whenever I need a dependable keto rhubarb dessert, this recipe always comes through.
Ingredients
- 3 ½ cups almond flour
- 1 cup sugar substitute
- 1 ½ teaspoons baking powder
- ½ teaspoon sea salt
- 1 cup (2 sticks) unsalted butter, cold and cubed
- 1 large egg, lightly beaten
- 3 cups sliced strawberries
- 2 cups sliced rhubarb (fresh or frozen)
- ½ teaspoon xanthan gum
- ½ cup sugar substitute
Step-by-Step Instructions
Preparing the Ingredients
Preheat your oven to 350°F and grease a 9×13-inch baking dish so the Keto Strawberry Rhubarb Crumble releases easily after baking. In a large bowl, combine almond flour, sugar substitute, baking powder, and salt, then add the cold butter and cut it in until the mixture forms pea-sized crumbs. After that, mix in the beaten egg until the texture becomes cohesive, then press half of the crumble mixture evenly into the bottom of the prepared dish to form a solid base.
Cooking Instructions
In another bowl, mix strawberries, rhubarb, xanthan gum, and sugar substitute until well combined, then spread this mixture evenly over the crust. Next, sprinkle the remaining crumble mixture over the top to create that classic layered texture seen in a keto cobbler. Bake for about 40 minutes until the top turns golden and the fruit releases its juices, then remove from the oven and allow it to cool slightly before serving for the best texture.
Tips for Perfect Results
Common Mistakes to Avoid
Avoid using warm butter when making Keto Strawberry Rhubarb Crumble because it prevents the crumbly texture from forming correctly. Also, do not skip evenly spreading the fruit mixture, as uneven layers can affect baking consistency. If you use frozen rhubarb, remember not to thaw it first, or the filling may become too watery.
Pro Tips for Better Flavor
For a richer taste, use high-quality butter and fresh strawberries when available, since they bring out the natural sweetness of this Keto Strawberry Rhubarb Crumble. Additionally, let the crumble rest for at least 15 minutes after baking so the filling sets properly, making it easier to slice or serve. A pinch of cinnamon can also add depth without increasing carbs.
Serving and Storage
How to Serve
Serve Keto Strawberry Rhubarb Crumble warm for a comforting dessert, or let it cool completely to cut into neat bars for gatherings. It pairs well with whipped cream or a scoop of low-carb vanilla ice cream, which complements the tart fruit and buttery topping beautifully.

How to Store Leftovers
Store leftover Keto Strawberry Rhubarb Crumble in an airtight container in the refrigerator for up to five days, making it a convenient make-ahead dessert. For longer storage, freeze portions for up to three weeks, then reheat gently in the oven or microwave before serving.
Conclusion
Keto Strawberry Rhubarb Crumble offers a simple yet flavorful way to enjoy a seasonal dessert without breaking your low-carb goals. With its crisp topping and juicy filling, it delivers everything you want in a homemade treat. Try it once, and it will quickly become your go-to recipe for any occasion.
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Frequently Asked Questions
Can I make Keto Strawberry Rhubarb Crumble ahead of time?
Yes, you can prepare Keto Strawberry Rhubarb Crumble in advance and store it in the refrigerator before baking or after it has cooled. When ready to serve, simply reheat it in the oven to bring back its crisp texture and warm filling.
Can I use frozen fruit in this recipe?
Absolutely, frozen strawberries and rhubarb work well in Keto Strawberry Rhubarb Crumble, and you do not need to thaw them before use. This helps maintain the proper texture and prevents excess moisture in the filling.
Is this recipe suitable for strict keto diets?
Yes, Keto Strawberry Rhubarb Crumble uses low-carb ingredients like almond flour and sugar substitutes, making it suitable for most keto plans. Just choose a sugar substitute that fits your dietary needs to keep carbs as low as possible.
Print
Keto Strawberry Rhubarb Crumble
- Total Time: 50 minutes
- Yield: 15 1x
Description
The tartness of rhubarb combined with sweet strawberries creates a perfect keto crumble with a buttery topping.
Ingredients
- 3 1/2 cups almond flour
- 1 cup sugar substitute
- 1 1/2 teaspoons baking powder
- 1/2 teaspoon sea salt
- 1 cup unsalted butter, cold and cubed
- 1 large egg, lightly beaten
- 3 cups sliced strawberries
- 2 cups sliced rhubarb
- 1/2 teaspoon xanthan gum
- 1/2 cup sugar substitute
Instructions
- Preheat oven to 350°F and grease a 9×13-inch baking dish
- Mix almond flour, sugar substitute, baking powder, and salt
- Cut in butter until crumbly
- Add egg and mix well
- Press half mixture into pan
- Mix fruit, xanthan gum, and sweetener
- Spread fruit over crust
- Top with remaining crumble
- Bake 40 minutes until golden
- Cool slightly and serve
Notes
- Use fresh or frozen rhubarb
- Do not thaw frozen rhubarb
- Let rest before serving
- Store in fridge up to 5 days or freeze 3 weeks
- Prep Time: 10 minutes
- Cook Time: 40 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1
- Calories: 232
- Sugar: 3
- Sodium: 93
- Fat: 26
- Saturated Fat: 9
- Unsaturated Fat: 15
- Trans Fat: 0
- Carbohydrates: 9
- Fiber: 4
- Protein: 6
- Cholesterol: 45