Sweet and Tart Coconut Rhubarb Crunch

This Sweet and Tart Coconut Rhubarb Crunch is the ultimate spring dessert that perfectly balances tangy rhubarb with a buttery, tropical coconut topping. It is incredibly easy to whip up and offers a delightful crunch in every single bite, making it a favorite for family gatherings and potlucks.

Why You Will Love This Recipe

There are so many reasons to fall in love with this Sweet and Tart Coconut Rhubarb Crunch. First, the flavor profile is exceptional; the natural acidity of the rhubarb is mellowed by the sweetness of the sugar and the toasted notes of the coconut. Second, the texture is a dream, featuring a soft, jammy fruit base topped with a crisp, golden crumble. Finally, this recipe is highly approachable for bakers of all skill levels, requiring minimal prep work and simple pantry staples.

Ingredients

• 4 cups fresh rhubarb, sliced into 1/2-inch pieces
• 1 cup granulated sugar
• 3 tablespoons cornstarch
• 1 teaspoon vanilla extract
• 1 cup all-purpose flour
• 1 cup old-fashioned rolled oats
• 1 cup shredded sweetened coconut
• 1 cup light brown sugar, packed
• 1/2 teaspoon ground cinnamon
• 1/2 cup cold unsalted butter, cubed
• 1/4 teaspoon salt

Step-by-Step Instructions

1. Preheat your oven to 375°F (190°C) and lightly grease a 9×9-inch baking dish with butter or non-stick spray.
2. In a large mixing bowl, combine the sliced rhubarb, granulated sugar, cornstarch, and vanilla extract. Toss well until the rhubarb is evenly coated, then spread the mixture into the bottom of the prepared baking dish.
3. In a separate medium bowl, whisk together the all-purpose flour, rolled oats, shredded coconut, brown sugar, cinnamon, and salt.
4. Add the cold, cubed butter to the dry mixture. Use a pastry cutter or your fingers to work the butter into the dry ingredients until the mixture resembles coarse crumbs and the butter is roughly the size of peas.
5. Evenly sprinkle the coconut crumble mixture over the rhubarb base, ensuring it covers the fruit completely.
6. Place the dish in the preheated oven and bake for 35 to 45 minutes, or until the rhubarb filling is bubbling and the topping is a deep golden brown.
7. Remove from the oven and let the crunch sit for at least 15 minutes before serving to allow the fruit juices to thicken.

Expert Tips / Pro Tips

For the best results with your Sweet and Tart Coconut Rhubarb Crunch, try to use fresh rhubarb stalks that are firm and bright red, as they provide the best color and flavor. If your rhubarb is particularly green, the taste will still be delicious, but the color will be more muted. When preparing the topping, ensure your butter is very cold; this is the secret to achieving those distinct, crunchy nuggets of crumble rather than a greasy layer. Additionally, don’t be afraid to let the coconut get a little toasted in the oven, as it enhances the nutty aroma of the dessert.

If you want to put a twist on this classic, you can easily swap half of the rhubarb for fresh strawberries to create a Coconut Strawberry Rhubarb Crunch. For those with dietary restrictions, a 1:1 gluten-free flour blend works perfectly in the topping. If you prefer a less sweet dessert, you can use unsweetened shredded coconut instead of the sweetened variety. You can also add a half-cup of chopped pecans or walnuts to the topping for an even more pronounced crunch.

Serving Suggestions

This Sweet and Tart Coconut Rhubarb Crunch is best served warm. A generous scoop of premium vanilla bean ice cream is the traditional accompaniment, as the cold creaminess melts into the warm fruit. For a lighter option, try a dollop of whipped cream or a spoonful of Greek yogurt. If you are serving this at a brunch, it even pairs beautifully with a cup of coffee or tea.

Store any leftovers in an airtight container in the refrigerator for up to 4 days. To maintain the crunch of the topping, it is best to reheat portions in the oven or a toaster oven at 350°F for about 10 minutes. While you can freeze this dessert for up to 3 months, be aware that the topping may lose some of its crispness upon thawing. To freeze, wrap the cooled dish tightly in plastic wrap and aluminum foil. Thaw in the refrigerator overnight before reheating.

Nutrition Information

FAQ

Can I use frozen rhubarb for this recipe?

Yes, you can use frozen rhubarb. Make sure to thaw it completely and drain away any excess liquid before tossing it with the sugar and cornstarch to prevent the dessert from becoming too watery.

Is rhubarb safe to eat raw?

The stalks of the rhubarb plant are safe to eat raw or cooked, though they are very tart. However, you must always discard the leaves, as they contain high levels of oxalic acid and are toxic.

How do I know when the crunch is finished baking?

The dessert is done when you see the red fruit juices bubbling up around the edges of the pan and the coconut topping has turned a beautiful golden-brown color.

Can I make this recipe vegan?

Absolutely. Simply replace the unsalted butter with a cold vegan butter substitute or chilled coconut oil (in solid form) to make this recipe entirely plant-based.

Sweet and Tart Coconut Rhubarb Crunch

A delightful dessert featuring a tangy rhubarb filling topped with a buttery, toasted coconut and oat crumble.

Print Recipe Pin Recipe

Prep Time 20 minutes mins

Cook Time 45 minutes mins

Total Time 1 hour hr 5 minutes mins

Servings: 8 servings

Course: Dessert

Cuisine: American

Calories: 385

Ingredients Method Notes

Ingredients

  

Rhubarb Filling

• 5 cups fresh rhubarb
• 1 cup granulated sugar
• 3 tablespoons cornstarch
• 1 teaspoon vanilla extract

Coconut Crunch Topping

• 1 cup all-purpose flour
• 1 cup rolled oats
• 1 cup shredded sweetened coconut
• 1 cup brown sugar
• 1/2 cup unsalted butter
• 1/2 teaspoon ground cinnamon

Method

 

Instructions

1. Preheat your oven to 375°F (190°C) and lightly grease a 9×9 inch baking dish with butter or non-stick spray.
2. In a large mixing bowl, combine the chopped rhubarb, granulated sugar, cornstarch, and vanilla extract. Toss well to ensure the rhubarb is evenly coated.
3. Transfer the rhubarb mixture into the prepared baking dish, spreading it out into an even layer.
4. In a separate medium bowl, whisk together the flour, oats, shredded coconut, brown sugar, and cinnamon.
5. Pour the melted butter over the dry topping ingredients. Use a fork or your fingers to mix until the mixture forms moist crumbs.
6. Evenly sprinkle the coconut crumble over the rhubarb filling in the baking dish.
7. Bake for 40 to 45 minutes, or until the fruit filling is bubbling and the coconut topping has turned a deep golden brown.
8. Remove from the oven and let the crunch cool for at least 15-20 minutes before serving to allow the juices to thicken.

Notes

This dessert is best served warm. It pairs perfectly with a scoop of vanilla bean ice cream or a dollop of fresh whipped cream.