Rhubarb Strawberry Crisp Recipe

Introduction

This Strawberry Rhubarb Crisp – Gluten Free, No Refined Sugar is the perfect celebration of spring’s sweet-tart bounty. The juicy fruit filling bubbles beneath a buttery, cinnamon-spiced oat topping for a dessert that’s as comforting as it is wholesome. After extensive recipe testing, I’ve perfected this version to be naturally sweetened and free from common allergens, delivering a dessert you can feel great about serving.

Ingredients

The magic of this crisp comes from simple, high-quality ingredients. Using fresh, in-season strawberries and crisp rhubarb ensures the best flavor, while coconut sugar and oat flour create a deliciously wholesome treat.

• For the Filling:
• 2 cups rhubarb (chopped)
• 2 cups strawberries (sliced)
• ¼ cup coconut sugar (+ 2 Tbsp extra)
• 2 tsp arrowroot powder (or ½ Tbsp cornstarch)
• ½ freshly squeezed lemon juice
• 1 tsp vanilla extract
• For the Crisp Topping:
• ¾ cup oat flour (or make your own (see notes))
• 1 cup old fashioned rolled oats
• ½ cup unsalted butter (cut into pieces)
• ½ cup coconut sugar
• 1 tsp cinnamon
• ½ tsp salt

Timing

Prep Time	20 minutes
Cook Time	40 minutes
Total Time	1 hour

Context: This recipe is about 20% faster than many traditional crisps that require pre-cooking the filling. The hands-on prep is minimal, making it a fantastic last-minute dessert for gatherings. The crisp topping bakes to a perfect golden brown in about 40 minutes, filling your kitchen with an irresistible aroma.

Step-by-Step Instructions

Step 1 — Prepare the Fruit Filling

Preheat your oven to 375°F (190°C). In a large mixing bowl, combine the chopped rhubarb and sliced strawberries. Sprinkle the ¼ cup coconut sugar, arrowroot powder, lemon juice, and vanilla extract over the fruit. Toss everything together gently but thoroughly until the fruit is evenly coated. (Pro tip: The arrowroot powder acts as a thickener, creating a glossy sauce without the gummy texture cornstarch can sometimes cause).

Step 2 — Assemble the Filling in the Baking Dish

Transfer the coated fruit mixture into an 8×8 inch or similar 2-quart baking dish. Spread it into an even layer. Taste a piece of fruit; if your rhubarb is particularly tart, you can sprinkle the optional extra 2 tablespoons of coconut sugar over the top. This step ensures a perfectly balanced sweet-tart flavor in every bite.

Step 3 — Make the Crisp Topping

In a separate bowl, whisk together the oat flour, rolled oats, ½ cup coconut sugar, cinnamon, and salt. Add the pieces of cold, unsalted butter. Using a pastry cutter, your fingers, or a fork, work the butter into the dry ingredients until the mixture resembles coarse crumbs with some pea-sized butter pieces remaining. (Pro tip: Keeping the butter cold is key for a flaky, crisp topping that doesn’t turn greasy).

Step 4 — Top and Bake the Crisp

Evenly sprinkle the oat topping mixture over the prepared fruit filling, covering it completely. Do not press down. Place the baking dish on a middle oven rack and bake for 35-40 minutes. Unlike boiling fruit on the stovetop, baking allows the natural sugars in the strawberries and rhubarb to slowly caramelize, deepening the flavor.

Step 5 — Check for Doneness

The crisp is done when the fruit filling is visibly bubbling around the edges and the topping is a deep, golden brown. The internal temperature of the filling should reach about 200°F. In my tests, this baking time consistently yields a tender filling and a perfectly crisp, buttery topping.

Step 6 — Cool and Serve

Remove the crisp from the oven and place it on a wire rack. Allow it to cool for at least 20-30 minutes before serving. This resting period is crucial as it allows the fruit filling to thicken properly, preventing a runny sauce. Serve warm, ideally with a scoop of vanilla ice cream or a dollop of whipped coconut cream.

Nutritional Information

Calories	~280
Protein	4g
Carbohydrates	42g
Fat	12g
Fiber	5g
Sodium	150mg

Note: Estimates are per serving, based on typical ingredients and a 1/8th slice. Values may vary. This gluten-free strawberry rhubarb crisp is a good source of fiber and Vitamin C from the fresh fruit.

Healthier Alternatives

• Swap butter for coconut oil — Creates a dairy-free, vegan crisp topping with a subtle tropical note.
• Use almond flour instead of oat flour — Adds more protein and healthy fats for a lower-carb, grain-free option.
• Replace coconut sugar with monk fruit sweetener — Offers a zero-glycemic index alternative for a sugar-free dessert.
• Add chopped nuts to the topping — Increases protein and healthy fats for extra crunch and satiety.
• Mix in chia seeds with the filling — Boosts fiber and omega-3s while helping thicken the sauce naturally.
• Use avocado oil or ghee — Provides a neutral-flavored, high-smoke point fat alternative to butter.

Serving Suggestions

• Top a warm serving with a scoop of vanilla bean ice cream for a classic hot-and-cold contrast.
• Pair with a dollop of whipped coconut cream to keep it fully dairy-free and paleo-friendly.
• Serve alongside a cup of herbal tea, like peppermint or chamomile, for a cozy after-dinner treat.
• Pack individual portions for a wholesome, satisfying lunchbox dessert.
• Present it straight from the baking dish at a casual spring brunch or picnic.
• Crumble it over plain Greek yogurt for a protein-packed breakfast parfait.

This healthy strawberry rhubarb crisp is versatile enough for any occasion, from a weeknight family dessert to a centerpiece for seasonal entertaining.

Common Mistakes to Avoid

• Mistake: Using warm or melted butter for the topping. Fix: Always use cold butter to create a flaky, crisp texture that doesn’t become greasy.
• Mistake: Skipping the cooling time after baking. Fix: Allow the crisp to rest for at least 20 minutes so the fruit juices can properly thicken.
• Mistake: Over-mixing the crisp topping into a uniform dough. Fix: Stop mixing when you have coarse crumbs; pea-sized butter pieces are ideal for browning.
• Mistake: Not tasting the rhubarb for tartness before baking. Fix: Always taste a piece and adjust the sweetener in the filling as suggested in Step 2.
• Mistake: Using a baking dish that’s too small. Fix: Use the recommended 8×8 inch or 2-quart dish to prevent the filling from bubbling over.
• Mistake: Pressing the topping down onto the fruit. Fix: Gently sprinkle it on evenly; pressing it down steams the topping and prevents crisping.

Storing Tips

• Fridge: Cool completely, then cover tightly or transfer to an airtight container. Store in the refrigerator for up to 5 days.
• Freezer: For longer storage, freeze individual portions in airtight containers for up to 3 months. Thaw overnight in the fridge before reheating.
• Reheat: Reheat single servings in the microwave for 60-90 seconds, or warm the entire crisp in a 350°F oven for 10-15 minutes until heated through to 165°F.

In my tests, this no refined sugar crisp maintains its texture best when stored properly. For meal prep, bake the crisp and portion it out for ready-to-eat desserts all week.

Conclusion

This Strawberry Rhubarb Crisp – Gluten Free, No Refined Sugar proves that wholesome desserts can be incredibly satisfying. Its perfect balance of sweet and tart, with a delightfully crunchy topping, makes it a crowd-pleaser for any gathering. If you love this seasonal treat, you might also enjoy a Delightful Blueberry Rhubarb Crisp Recipe or a Classic Rhubarb Cobbler Recipe. Try this recipe and share your results in the comments!

Frequently Asked Questions

Can I make this Strawberry Rhubarb Crisp ahead of time?

Yes, you can prepare this crisp up to a day in advance. According to my recipe testing, the best method is to assemble the filling and topping separately, storing them covered in the refrigerator. Combine and bake just before serving to ensure the topping stays perfectly crisp and doesn’t become soggy.

What can I use if I don’t have arrowroot powder or cornstarch?

You can substitute with an equal amount of tapioca starch, which works similarly as a thickener. For a grain-free option, 1 tablespoon of ground flaxseed mixed with 2 tablespoons of water creates a gel that helps bind the juices. Unlike the alternatives mentioned in the Healthier Alternatives section, these swaps focus specifically on the thickener for the fruit filling.

Why is my crisp topping not getting crispy?

This usually happens because the butter was too warm or the topping was pressed down onto the fruit. For a crisp result, use cold butter and sprinkle the topping loosely. Also, ensure your oven is fully preheated and bake until the topping is a deep golden brown, as visual cues are more reliable than time alone for achieving the right texture.

Print