Rhubarb crumble is a beloved dessert that combines tart fruit with a sweet, crunchy topping. Traditionally made with wheat flour, it’s not always suitable for those avoiding gluten. Fortunately, creating a delicious gluten free rhubarb crumble is easier than you might think. With a few simple swaps and thoughtful ingredients, this classic dessert can be enjoyed by everyone, including those with gluten intolerance or celiac disease. The contrast between the tangy rhubarb and the buttery, crisp topping remains just as satisfying, and it pairs wonderfully with a scoop of vanilla ice cream or a dollop of whipped cream.
Why Rhubarb Works So Well in Crumbles
The Unique Flavor of Rhubarb
Rhubarb is a vegetable that’s often treated like a fruit in desserts due to its tartness and ability to soften beautifully when cooked. Its bold flavor stands up well to sweet toppings and additions like strawberries or apples, but it can also shine on its own in a crumble. The natural tang of rhubarb makes it a refreshing and vibrant ingredient in gluten free desserts.
Seasonal and Nutrient-Rich
Rhubarb is typically in season during the spring and early summer months. It’s rich in vitamin K, calcium, and antioxidants, making it a health-conscious ingredient for baked treats. When combined with a gluten free crumble topping, it creates a wholesome dessert that doesn’t compromise on taste or nutrition.
Ingredients for a Perfect Gluten Free Rhubarb Crumble
Rhubarb Filling
For the fruit layer, you’ll need fresh or frozen rhubarb and a few simple ingredients to balance its tartness:
- 4 cups chopped rhubarb (fresh or thawed if frozen)
- 1/2 cup granulated sugar (adjust to taste)
- 2 tablespoons cornstarch or arrowroot powder (to thicken the juices)
- 1 teaspoon vanilla extract (optional for added depth)
- 1 tablespoon lemon juice (to enhance the fruit’s brightness)
Gluten Free Crumble Topping
The topping is where texture matters most. The goal is a crumbly, golden layer that contrasts the soft fruit underneath. For this, you’ll need:
- 3/4 cup gluten free rolled oats
- 1/2 cup almond flour or oat flour
- 1/4 cup brown sugar or coconut sugar
- 1/4 cup chopped nuts (walnuts or pecans work well)
- 1/4 teaspoon ground cinnamon
- 1/4 teaspoon salt
- 1/4 cup cold unsalted butter or dairy-free butter, cubed
How to Make Gluten Free Rhubarb Crumble
Step-by-Step Instructions
- Step 1: Preheat your oven to 350°F (175°C).
- Step 2: In a large mixing bowl, combine rhubarb, sugar, lemon juice, vanilla, and cornstarch. Toss until the fruit is evenly coated.
- Step 3: Pour the rhubarb mixture into a greased 9-inch baking dish and spread it out evenly.
- Step 4: In a separate bowl, combine oats, almond flour, sugar, nuts, cinnamon, and salt. Add the cubed butter and use your fingers or a pastry cutter to work it into the dry ingredients until the mixture becomes crumbly.
- Step 5: Sprinkle the crumble topping evenly over the rhubarb layer.
- Step 6: Bake for 3540 minutes or until the top is golden and the fruit is bubbling around the edges.
- Step 7: Let the crumble cool slightly before serving. Enjoy warm or at room temperature.
Serving Suggestions
Delicious Pairings
Gluten free rhubarb crumble is best served warm and can be paired with a variety of toppings, such as:
- Vanilla ice cream (dairy or non-dairy)
- Greek yogurt or coconut yogurt
- Lightly sweetened whipped cream
- Chilled custard or pouring cream
For added flair, sprinkle with fresh mint leaves or a dusting of powdered sugar right before serving.
Tips for Gluten Free Baking Success
Choosing the Right Oats
Not all oats are gluten free due to cross-contamination during processing. Make sure to buy oats that are certified gluten free to ensure your crumble is safe for those with gluten sensitivities.
Using a Blend of Flours
For a better texture, combining almond flour with oat flour or a gluten free all-purpose blend creates a balance of richness and structure. This makes the topping crisp without being dry or crumbly.
Storage and Reheating
Leftover rhubarb crumble can be stored in the fridge for up to 3 days. Reheat in the oven or microwave until warmed through. You can also freeze the entire crumble (once baked) and thaw before reheating for an easy future dessert.
Variations of Gluten Free Rhubarb Crumble
With Strawberries
Rhubarb and strawberries are a natural match. Replace half the rhubarb with chopped strawberries for a sweeter, more balanced filling. The natural sugars in strawberries mellow the tartness of the rhubarb.
With Apples or Pears
To add body and natural sweetness, combine rhubarb with sliced apples or pears. This version is especially good in the cooler months when berries are out of season.
Nut-Free Option
If you’re avoiding nuts, simply leave them out of the topping or replace them with sunflower seeds or extra oats for a similar crunch.
Health Benefits of a Gluten Free Rhubarb Crumble
Nutrient-Dense Ingredients
This dessert is more than just delicious. Rhubarb provides fiber and vitamins, while almond flour and oats offer healthy fats and slow-digesting carbohydrates. When made with unrefined sugars and dairy-free alternatives, it becomes a wholesome treat you can enjoy any time.
Lower in Refined Ingredients
By choosing natural sweeteners like coconut sugar and using whole food ingredients, this gluten free crumble avoids many of the processed components found in packaged desserts. It’s a dessert you can feel good about sharing with your family or guests.
Gluten free rhubarb crumble is a satisfying, easy-to-make dessert that captures the best of both tart and sweet flavors. With simple, accessible ingredients and a crunchy oat-based topping, it’s a treat that even non-gluten free eaters will enjoy. Whether you stick with classic rhubarb or mix it up with seasonal fruit, this crumble is endlessly adaptable and perfect for spring, summer, or any time of year. Try making your own gluten free rhubarb crumble and enjoy a comforting dessert that’s both allergy-friendly and full of flavor.