This delightful rhubarb crunch recipe is a perfect blend of tart and sweet, making it an ideal dessert for any occasion. The combination of tender rhubarb and a crispy, buttery topping will have everyone asking for seconds. It's simple to make and a great way to use up any rhubarb you might have on hand.
If you're not familiar with rhubarb, it's a tart vegetable often used in desserts. You might not have it in your pantry, so look for it in the produce section of your supermarket. Vegan butter is another ingredient you might need to pick up; it can usually be found in the dairy or specialty foods section.

Ingredients for Rhubarb Crunch Recipe
Rhubarb: A tart vegetable that adds a unique flavor to desserts.
Sugar: Sweetens the rhubarb mixture.
All-purpose flour: Helps thicken the rhubarb filling and binds the topping.
Rolled oats: Adds a chewy texture to the topping.
Brown sugar: Provides a rich, caramel-like sweetness to the topping.
Vegan butter: Binds the topping ingredients together and adds a buttery flavor.
Technique Tip for Making Rhubarb Crunch
When preparing the rhubarb, make sure to chop it into evenly sized pieces to ensure uniform cooking. If the pieces are too large, they may not become tender by the time the crumble topping is golden brown. Additionally, for a more complex flavor, consider adding a pinch of cinnamon or nutmeg to the oat mixture before sprinkling it over the rhubarb mixture. This will add a warm, spicy note that complements the tartness of the rhubarb.
Suggested Side Dishes
Alternative Ingredients
Sugar - Substitute with coconut sugar: Coconut sugar is a natural sweetener that provides a similar level of sweetness with a slightly caramel-like flavor.
All-purpose flour - Substitute with whole wheat flour: Whole wheat flour adds a bit more fiber and nutrients while still providing the necessary structure.
Rolled oats - Substitute with quinoa flakes: Quinoa flakes offer a similar texture and are a good source of protein and essential amino acids.
Brown sugar - Substitute with maple syrup: Maple syrup adds a rich, complex sweetness and is a natural sweetener.
Vegan butter - Substitute with coconut oil: Coconut oil provides a similar fat content and helps achieve the desired texture while adding a subtle coconut flavor.
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How To Store / Freeze This Dessert
Allow the rhubarb crunch to cool completely at room temperature before storing. This prevents condensation from forming, which can make the topping soggy.
Transfer the rhubarb crunch to an airtight container. If you don't have a container large enough, you can cover the baking dish tightly with plastic wrap or aluminum foil.
Store the rhubarb crunch in the refrigerator for up to 5 days. The cool temperature helps maintain the texture and flavor of the dessert.
For longer storage, consider freezing. Wrap the rhubarb crunch tightly in plastic wrap, then cover with a layer of aluminum foil to prevent freezer burn.
Label the package with the date so you can keep track of its freshness. The rhubarb crunch can be frozen for up to 3 months.
When ready to enjoy, thaw the rhubarb crunch in the refrigerator overnight. This gradual thawing helps preserve the texture of the dessert.
To reheat, preheat your oven to 350°F (175°C). Place the rhubarb crunch in an oven-safe dish and cover with aluminum foil to prevent the topping from burning. Heat for about 15-20 minutes, or until warmed through.
Alternatively, you can reheat individual portions in the microwave. Place a serving on a microwave-safe plate and heat on medium power for 1-2 minutes, checking frequently to avoid overheating.
How To Reheat Leftovers
Preheat your oven to 350°F (175°C). Place the rhubarb crunch in an oven-safe dish and cover it with aluminum foil to prevent the topping from burning. Heat for about 15-20 minutes, or until warmed through.
For a quicker method, use a microwave. Place a portion of the rhubarb crunch on a microwave-safe plate. Cover it with a microwave-safe cover or another plate to retain moisture. Heat on medium power for 1-2 minutes, checking halfway through to ensure it heats evenly.
If you prefer a crispy topping, use a toaster oven. Set it to 350°F (175°C) and place the rhubarb crunch on a piece of foil or a small baking tray. Heat for about 10-15 minutes, keeping an eye on it to avoid over-browning.
For an air fryer, preheat it to 320°F (160°C). Place the rhubarb crunch in a small, air fryer-safe dish. Heat for 5-7 minutes, checking halfway to ensure it doesn't get too crispy.
Essential Tools for Making Rhubarb Crunch
Oven: Used to bake the rhubarb crunch at the specified temperature until the topping is golden brown and the rhubarb is tender.
Mixing bowl: Needed to combine the chopped rhubarb, sugar, and flour, as well as to mix the rolled oats, brown sugar, and flour with the melted vegan butter.
Baking dish: The vessel in which the rhubarb mixture is spread and the oat topping is sprinkled before baking.
Measuring cups: Essential for accurately measuring the rhubarb, sugar, flour, rolled oats, and vegan butter.
Measuring spoons: Used to measure the 3 tablespoons of all-purpose flour for the rhubarb mixture.
Wooden spoon: Handy for stirring the ingredients together in the mixing bowls.
Knife: Required for chopping the rhubarb into small pieces.
Cutting board: Provides a safe surface for chopping the rhubarb.
Spatula: Useful for spreading the rhubarb mixture evenly in the baking dish and for transferring the oat topping.
Cooling rack: Allows the baked rhubarb crunch to cool slightly before serving.
How to Save Time on Making This Recipe
Prepare the filling: Chop the rhubarb in advance and store it in the fridge. This will save you time when you're ready to bake.
Measure ingredients: Pre-measure the sugar, flour, and rolled oats and keep them in separate containers. This makes mixing quicker.
Melt the butter: Melt the vegan butter while you preheat the oven. This way, it's ready to mix with the dry ingredients.
Use a food processor: Use a food processor to quickly combine the oats, brown sugar, and flour for the topping.

Rhubarb Crunch Recipe
Ingredients
Filling
- 4 cups rhubarb, chopped
- 1 cup sugar
- 3 tablespoons all-purpose flour
Topping
- 1 cup rolled oats
- 1 cup brown sugar
- 1 cup all-purpose flour
- ½ cup vegan butter, melted
Instructions
- Preheat the oven to 375°F (190°C).
- In a mixing bowl, combine chopped rhubarb, sugar, and flour. Spread evenly in a baking dish.
- In another bowl, mix rolled oats, brown sugar, and flour. Stir in melted vegan butter until crumbly. Sprinkle over the rhubarb mixture.
- Bake for 45 minutes, until the topping is golden brown and the rhubarb is tender.
- Let cool slightly before serving.
Nutritional Value
Keywords
Suggested Appetizers and Main Courses to Pair With This Recipe
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