Gluten-Free Raspberry Rhubarb Crumble Bars

Gluten-free raspberry rhubarb crumble bars are a delightful treat that balances tangy rhubarb with sweet raspberries, nestled in a buttery oat topping. These bars are not just gluten-free; they offer a taste of summer in every bite, perfect for family gatherings or a casual snack. The combination of flavors and textures makes them irresistible.

Why You’ll Love This Gluten-Free Raspberry Rhubarb Crumble Bars

These gluten-free raspberry rhubarb crumble bars are not only delicious but also easy to make. They feature bright flavors from the fruits and a satisfying crunch from the oat topping. Whether you are gluten-sensitive or simply looking for a tasty dessert option, this recipe has something for everyone. They are naturally sweetened and can be dressed up with a scoop of ice cream or served plain for a healthier treat.

How to Make Gluten-Free Raspberry Rhubarb Crumble Bars

Ingredients:

3/4 cup gluten-free old-fashioned oats (80 grams)
1 cup oat flour (100 grams)
1/2 cup lightly packed brown sugar
1 tablespoon tapioca starch (or cornstarch)
1 1/4 teaspoons baking powder
1/4 teaspoon sea salt
1/4 teaspoon cinnamon
1/2 cup melted organic vegetable shortening (like Nutiva coconut/palm oil spread, or butter)
1 1/4 cups raspberry rhubarb compote
2 cups diced rhubarb (frozen or fresh) (225 grams)
1 1/4 cups organic raspberries (frozen or fresh) (170 grams)
1/3 cup + 1 tablespoon raw cane sugar
Zest and juice of one lemon
3 teaspoons cornstarch or tapioca starch
1/2 teaspoon vanilla extract

Step-by-Step Instructions:

Make the Compote:
- In a heavy-bottom saucepan, combine the diced rhubarb, raspberries, raw cane sugar, lemon zest, and juice.
- Over medium heat, bring this mixture to a hard boil while stirring. Once boiling, reduce heat and let it simmer for about 10 minutes.
- Add in the cornstarch or tapioca starch, stirring until dissolved. Cook for an additional 3 minutes until slightly thickened. Stir in the vanilla extract and remove from heat. Let it cool for 15 minutes.
Prepare the Crust:
- Preheat your oven to 350 degrees F (175 degrees C).
- In a large mixing bowl, whisk together the oat flour, oats, brown sugar, tapioca starch, baking powder, sea salt, and cinnamon until well combined.
- Pour in the melted shortening and mix well until no white streaks remain.
Assemble the Bars:
- Line an 8×8-inch baking pan with parchment paper.
- Press a heaping cup of the oat mixture firmly into the bottom of the pan using the back of a spatula or a spoon to create a smooth crust.
- Prick the crust with a fork a few times, then bake for 12 minutes or until fragrant and lightly browned. Remove from oven and let cool for 10 minutes.
Add the Filling:
- Spread 1 1/4 cups of the raspberry rhubarb compote on top of the cooled crust.
- Sprinkle the remaining oat mixture over the compote to create a topping.
Bake the Bars:
- Return to the oven and bake for an additional 25-30 minutes or until the topping is browned.
- Let the bars cool completely, then refrigerate for the best texture. Cut into square bars and enjoy!

How to Serve Gluten-Free Raspberry Rhubarb Crumble Bars

When serving, these bars can be enjoyed straight from the fridge for a refreshing treat. For an extra special dessert, top with a scoop of vanilla ice cream or serve with whipped cream. They are perfect for picnics, parties, or as a midday snack with tea.

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How to Store Gluten-Free Raspberry Rhubarb Crumble Bars

Store these crumble bars in an airtight container in the refrigerator. They will stay fresh for up to one week. If you want to enjoy them later, you can freeze the bars. Wrap them in plastic wrap and place them in a freezer-safe container. They will last up to three months in the freezer.

Tips to Make Gluten-Free Raspberry Rhubarb Crumble Bars Perfect

Choosing Fruits: Use fresh rhubarb and raspberries when they are in season for the best flavor. If using frozen fruit, allow it to thaw and drain any excess liquid before using.
Sweetness Level: Adjust the sugar based on your taste preference or the tartness of your rhubarb.
Texture: Be sure to let the bars cool completely before cutting. This helps them hold their shape when serving.

Flavor Variations

Get creative with your crumble bars by adding different flavors or substitute ingredients:

Swap rhubarb with diced apples or peaches for a different fruit profile.
Incorporate nuts like chopped walnuts or pecans for a crunchier topping.
Add spices like nutmeg or ginger along with cinnamon for an extra kick.

Pro Tips for Success

Oat Flour Options: If you cannot find oat flour, you can make your own by grinding gluten-free oats in a blender or food processor until fine.
Compote Consistency: If your compote is too runny, cook it a bit longer to thicken it up before adding it to the bars.
Pressing the Crust: When pressing the crust mixture, be firm to ensure it binds well and creates a sturdy base.

FAQs About Gluten-Free Raspberry Rhubarb Crumble Bars

1. Can I make these bars vegan?
Yes, you can replace the organic vegetable shortening with a vegan butter substitute. This will keep the recipe vegan-friendly.

2. Can I use a different type of flour?
While oat flour is recommended for this recipe, you can also use almond flour or a gluten-free baking blend. However, this may change the texture slightly.

3. How do I know when the bars are done baking?
The topping should be lightly browned and firm to the touch. If you poke it with a toothpick or fork, it should come out clean without any wet batter clinging to it.

Final Thoughts

Gluten-free raspberry rhubarb crumble bars are a wonderful dessert that combines simple ingredients and delivers fantastic flavor. They are easy to make and perfect for any occasion. Enjoy sharing these bars with family and friends, and watch them become a favorite treat for everyone!