A heavenly aroma wafted through my kitchen, teasing my taste buds with the promise of spring. As I chopped vibrant rhubarb, memories of warmer days flooded back, igniting a craving for something sweet yet tart. That’s how this Easy Vegan Rhubarb Crumble with Oats was born—a delightful balance that celebrates the season and satisfies my dessert-loving heart. Not only is this crumble incredibly easy to whip up, but it’s also dairy-free and lower in sugar than traditional recipes, making it a guilt-free indulgence. Perfect for gatherings or a cozy night in, serve it warm with a dollop of dairy-free yogurt or a scoop of vanilla ice cream. Ready to embrace the tartness of rhubarb in a comforting crumble? Let’s dive in!

Why is this Rhubarb Crumble special?
Simplicity at Its Best: This recipe features uncomplicated steps that any home cook can master, making it accessible for everyone.
Vibrant Flavor: The combination of tart rhubarb and sweet streusel creates an irresistible harmony that dances on your palate.
Customizable Sweetness: Whether you prefer a little extra sugar or just a hint, you can easily adjust the sweetness to satisfy your cravings.
Perfect for Spring: Celebrate the season with this fresh, fruity dessert that beautifully embodies spring’s essence, ideal for any gathering.
Versatile Serving Options: Pair it with dairy-free yogurt or a scoop of vanilla ice cream for a delightful finishing touch that will impress your guests, even if they usually reach for fast food!
If you enjoy fresh fruit desserts, you might also love our Apple Crumble Chia for a similar comforting experience.
Rhubarb Crumble with Oats Ingredients
• Get ready to create a delightful dessert with these key components!
For the Filling
- Fresh Rhubarb – 5 cups (620g) chopped; this gives your crumble its signature tartness—choose firm stalks for the best flavor.
- Granulated Sugar or Semi-Packed Brown Sugar – ½ cup; sweetens the rhubarb, and feel free to adjust according to your preferred sweetness level.
- Arrowroot Powder – 1 tablespoon; thickens the filling, but you can substitute it with cornstarch if needed.
- Lemon Juice – Juice of ½ lemon; adds brightness and enhances the flavor profile of the rhubarb.
For the Crumble Topping
- All-Purpose Flour – ¾ cup; provides structure to your crumble topping; whole wheat or spelt flour can work in its place.
- Rolled Oats – ¾ cup; adds body and a delightful crunch; quick oats can be used if necessary.
- Ground Almond Flour – ¼ cup; contributes a slight nutty flavor and enhances the texture.
- Ground Cinnamon – 1 teaspoon; infuses warmth and a lovely depth of flavor into the crumble.
- Sea Salt – ¼ teaspoon; balances the dish’s sweetness and tartness perfectly.
- Granulated Sugar – 3 tablespoons (for topping); this adds sweetness to the crumble; feel free to adjust based on your taste preferences.
- Refined Coconut Oil – ⅓ cup, softened; acts as a butter substitute, providing moisture and binding—the refined version keeps the coconut flavor at bay.
- Thick Dairy-Free Plain Yogurt – ¼ cup; helps bind the crumble topping, adding moisture—Greek-style yogurt gives the best texture.
Get ready to whip up this delicious Rhubarb Crumble with Oats, and savor every bite!
Step‑by‑Step Instructions for Easy Vegan Rhubarb Crumble with Oats
Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C). This step is crucial for ensuring even baking and achieving that perfect golden topping on your Rhubarb Crumble with Oats. While the oven warms up, you can prepare the filling and topping.
Step 2: Prepare the Filling
In a large mixing bowl, combine 5 cups of chopped fresh rhubarb, ½ cup of your preferred sugar, 1 tablespoon of arrowroot powder, and the juice of ½ lemon. Toss everything together until the rhubarb is evenly coated. Set the filling aside to allow the flavors to meld while you create the crumble topping.
Step 3: Make the Crumble Topping
In another bowl, whisk together ¾ cup of all-purpose flour, ¾ cup of rolled oats, 1 teaspoon of ground cinnamon, 3 tablespoons of granulated sugar, and ¼ teaspoon of sea salt. Then, use your hands or a pastry blender to incorporate ⅓ cup of softened refined coconut oil and ¼ cup of thick dairy-free yogurt. Mix until the mixture resembles a sandy texture with larger clumps forming, perfect for your crumble.
Step 4: Assemble the Dish
Take a 9-inch glass pie plate and pour in the rhubarb mixture, making sure to include all the delicious juices. Spread the crumble topping evenly over the rhubarb to create a generous layer. This creates a delightful contrast between the tart filling and the rich topping in your Easy Vegan Rhubarb Crumble with Oats.
Step 5: Bake the Crumble
Carefully place the assembled crumble in the preheated oven and allow it to bake for 40-45 minutes. Keep an eye on it—when the topping turns a beautiful golden brown and the juices are bubbling around the edges, you’ll know it’s done. The warm aromas will fill your kitchen, hinting at the delicious treat you’re about to enjoy.
Step 6: Cool and Serve
Once it’s baked to perfection, remove the Rhubarb Crumble with Oats from the oven and let it cool at room temperature for about 10-15 minutes. This cooling time helps the filling set and enhances the flavors. Serve warm, perhaps with a dollop of dairy-free yogurt or a scoop of vanilla ice cream for an extra-special treat.

Expert Tips for Rhubarb Crumble with Oats
Choose Fresh Rhubarb: Always opt for firm, fresh rhubarb stalks. Wilting or overly soft rhubarb can lead to a mushy filling that lacks texture and flavor.
Adjust the Sweetness: Don’t hesitate to tweak the sugar in the filling. If you love sweeter treats, add a couple more tablespoons for a personalized dessert that hits just the right note.
Use Accurate Measurements: Ensure you measure the arrowroot powder and coconut oil correctly. Too much oil can make the topping greasy, affecting that coveted crumble texture.
Cooling is Key: Allow the crumble to cool before serving. It helps the filling to set, maintaining a satisfying texture rather than running all over the plate.
Experiment with Toppings: Feel free to get creative! Adding nuts or seeds to the topping can enhance flavor and crunch, making your Rhubarb Crumble with Oats even more delightful.
What to Serve with Easy Vegan Rhubarb Crumble with Oats
Warm your heart and elevate your dessert game by exploring the perfect accompaniments to your delightful crumble.
- Coconut Yogurt: A creamy and dairy-free alternative, it adds a luscious texture that perfectly balances the tartness of the rhubarb filling.
- Vanilla Ice Cream: The classic pairing! A scoop of this sweet treat melts into the warm crumble, creating an irresistible contrast of temperatures.
- Fresh Mint Leaves: Sprinkle some fresh mint on top for a burst of freshness and a pop of color that enhances the dish’s visual appeal.
- Berry Compote: A warm berry compote drizzled over the crumble brings sweetness and additional fruity notes, amplifying the dessert experience.
- Green Tea: A cup of soothing green tea serves as a calming counterpart to the crumble, making each bite feel like a little piece of heaven.
- Almond Slices: For an extra layer of flavor and crunch, sprinkle sliced almonds over your crumble before serving or mix them into the topping.
- Lemon Zest: Grate some lemon zest on top for a burst of citrus that enhances the freshness of the rhubarb and elevates the overall flavor profile.
Serve your Rhubarb Crumble with Oats surrounded by these delightful companions, turning your dessert into a memorable celebration!
Rhubarb Crumble with Oats Variations
Feel free to put your personal twist on this delightful crumble, creating a dessert that perfectly suits your tastes!
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Sweeter Option: Increase the sugar in the filling by a few tablespoons for a more indulgent crumble. It’s a simple way to cater to your sweet tooth!
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Nutty Crust: Swap almond flour with crushed walnuts or pecans for a crunchy, nutty flavor that adds depth to your crumble. Feel the delightful crunch with every bite!
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Mixed Fruits: Add diced apples or strawberries to the rhubarb for a vibrant, multi-fruit experience. This combination elevates the tartness and rounds out the flavors beautifully.
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Gluten-Free: Use a gluten-free flour blend instead of all-purpose flour and certified gluten-free oats. This way, everyone can enjoy this scrumptious dessert without worry!
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Spice It Up: Add a pinch of ground ginger or nutmeg to the crumble topping for an extra warm spice note. This fragrant addition will take your dessert to the next level!
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Coconut Twist: Replace coconut oil with vegan butter or a different plant-based fat to create a richer taste. Enjoy the unique depth it adds to your crumble.
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Zesty Lemon: Incorporate the zest of a lemon or orange into the filling for a bright, citrusy pop that complements the rhubarb wonderfully. It’s like spring in every bite!
If you’re looking for other fruity delights, don’t miss our delicious Mango Blended Oats or try the comforting Garlic Butter Steak to satisfy your taste buds further. Enjoy experimenting!
How to Store and Freeze Rhubarb Crumble with Oats
Fridge: Store leftovers covered in the refrigerator for up to 3 days. Keep in mind that the crumble topping may lose some crispiness over time.
Freezer: For best results, refrain from freezing the baked crumble. However, raw rhubarb can be diced and frozen for up to 3 months, allowing you to prepare fresh crumbles at your convenience.
Reheating: To enjoy warm, reheat individual portions in the microwave for about 30 seconds until heated through, or place in a 350°F (175°C) oven for 10-15 minutes until warm and crispy again.
Make Ahead Options
These Easy Vegan Rhubarb Crumble with Oats are perfect for busy home cooks looking to save time! You can prepare the rhubarb filling up to 24 hours in advance, storing it in an airtight container in the refrigerator to maintain its freshness. Additionally, the crumble topping can be mixed and refrigerated for up to 3 days, keeping its texture intact. To prevent the rhubarb from getting too watery, make sure to toss it with sugar and arrowroot powder right before assembling. When you’re ready to bake, simply combine the filling and topping in your baking dish and follow the baking instructions. You’ll have a delightful dessert with minimal evening effort!

Easy Vegan Rhubarb Crumble with Oats Recipe FAQs
How do I select ripe rhubarb?
When choosing rhubarb, look for firm stalks that are a vibrant crisp green or reddish hue. Avoid any that appear wilted or have dark spots all over, as this indicates overripeness. Fresh rhubarb should snap easily when bent, showcasing its freshness.
What is the best way to store leftovers?
Store any uneaten crumble in the refrigerator, covered, for up to 3 days. To maintain quality, try to place it in an airtight container. Keep in mind that the crumble’s top may lose some crispness, but it will still taste delicious!
Can I freeze the rhubarb crumble?
It’s best not to freeze the baked crumble as it can become soggy upon thawing. However, if you want to prep ahead, you can slice and freeze raw rhubarb for up to 3 months. When you’re ready, simply toss it directly into the crumble filling and adjust the baking time by a few minutes as needed.
What should I do if the filling is too runny?
If your rhubarb filling becomes too runny, don’t worry! You can remedy this by mixing in a bit more arrowroot powder—start with an additional tablespoon, and let it sit for a few minutes. If it’s still too liquidy, an alternative is to bake the crumble a bit longer, which will help the filling set.
Is this recipe suitable for people with allergies?
Absolutely! This Easy Vegan Rhubarb Crumble with Oats is dairy-free and can cater to various dietary needs. However, check for any sensitivities to gluten if you’re using all-purpose flour; you can substitute with gluten-free flour for a safe alternative. And if you’re serving guests, it’s always a good idea to ask about food allergies ahead of time.
How should I serve the crumble for best results?
Serve the rhubarb crumble warm with a dollop of thick dairy-free yogurt or a scoop of vanilla ice cream. The contrasting flavors and textures make for an indulgent dessert experience that’s sure to impress everyone, even those who typically prefer fast food!

Delicious Rhubarb Crumble with Oats: A Vegan Spring Treat
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C).
- In a large mixing bowl, combine rhubarb, sugar, arrowroot powder, and lemon juice. Toss until the rhubarb is evenly coated.
- In another bowl, whisk together flour, oats, cinnamon, sugar, and salt. Incorporate coconut oil and yogurt until the mixture resembles sandy texture.
- Pour the rhubarb mixture into a pie plate and spread the crumble topping evenly over it.
- Bake for 40-45 minutes until the topping is golden brown and juices are bubbling.
- Let it cool for about 10-15 minutes before serving with dairy-free yogurt or vanilla ice cream.

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