This delightful rhubarb crunch is a perfect blend of tart and sweet, making it an ideal dessert for any occasion. The combination of rhubarb, sugar, and a crumbly oat topping creates a comforting and delicious treat that is sure to please your taste buds.
If you don't usually have rhubarb in your kitchen, you might need to visit the produce section of your supermarket. Rhubarb is a tart vegetable often used in desserts, and it can be found fresh or sometimes frozen. Make sure to select firm, crisp stalks for the best results.

Ingredients For Rhubarb Crunch Recipe
Rhubarb: A tart vegetable that adds a unique flavor to desserts.
Sugar: Sweetens the rhubarb and balances its tartness.
Flour: Helps to thicken the rhubarb mixture and is used in the topping.
Oats: Adds a hearty texture to the crumbly topping.
Brown sugar: Provides a rich, caramel-like sweetness to the topping.
Butter: Binds the topping ingredients together and adds a rich flavor.
Technique Tip for This Recipe
When preparing the rhubarb for this recipe, ensure that you chop it into uniform pieces. This will help the rhubarb cook evenly and ensure a consistent texture throughout the crunch. Additionally, when mixing the oats, brown sugar, and flour for the topping, make sure the butter is fully melted and well-incorporated to achieve a perfectly crumbly texture.
Suggested Side Dishes
Alternative Ingredients
rhubarb - Substitute with strawberries: Strawberries provide a similar tartness and sweetness, making them a great alternative.
rhubarb - Substitute with apples: Apples offer a different texture but can mimic the tart flavor when combined with a bit of lemon juice.
sugar - Substitute with honey: Honey adds a natural sweetness and a slight floral note, though it may alter the texture slightly.
sugar - Substitute with maple syrup: Maple syrup provides a rich, caramel-like sweetness that complements the other ingredients well.
flour - Substitute with cornstarch: Cornstarch can thicken the mixture similarly to flour, though you may need to use less.
flour - Substitute with almond flour: Almond flour adds a nutty flavor and is a good gluten-free option.
oats - Substitute with quinoa flakes: Quinoa flakes offer a similar texture and are a good gluten-free alternative.
oats - Substitute with crushed nuts: Crushed nuts provide a crunchy texture and add a rich, nutty flavor.
brown sugar - Substitute with coconut sugar: Coconut sugar has a similar texture and a slightly caramel-like flavor.
brown sugar - Substitute with date sugar: Date sugar is less processed and adds a rich, sweet flavor.
butter - Substitute with coconut oil: Coconut oil provides a similar fat content and a slight coconut flavor.
butter - Substitute with margarine: Margarine offers a similar texture and is a good dairy-free alternative.
Other Alternative Recipes Similar to This Dessert
How to Store / Freeze This Dessert
Allow the rhubarb crunch to cool completely at room temperature before storing. This helps prevent condensation, which can make the topping soggy.
For short-term storage, cover the baking dish tightly with plastic wrap or aluminum foil. You can also transfer the dessert to an airtight container. Store in the refrigerator for up to 3-4 days.
To reheat, preheat your oven to 350°F (175°C). Place the rhubarb crunch in an oven-safe dish and cover with foil to prevent the topping from burning. Heat for about 15-20 minutes or until warmed through.
For freezing, first ensure the rhubarb crunch is completely cooled. Wrap the entire baking dish in plastic wrap, followed by a layer of aluminum foil. Alternatively, you can transfer individual portions to airtight freezer-safe containers.
Label the container with the date and contents. The rhubarb crunch can be frozen for up to 2-3 months.
To thaw, transfer the dessert from the freezer to the refrigerator. Allow it to thaw overnight or for at least 8 hours.
Reheat following the same instructions as for short-term storage, ensuring the rhubarb is heated through and the topping is crisp.
For an extra crispy topping after thawing, consider placing the rhubarb crunch under the broiler for a few minutes. Keep a close eye to avoid burning.
How to Reheat Leftovers
Preheat your oven to 350°F (175°C). Place the rhubarb crunch in an oven-safe dish, cover it with aluminum foil to prevent the topping from burning, and bake for about 15-20 minutes until it's warmed through and the rhubarb is bubbly.
For a quicker option, use the microwave. Place a portion of the rhubarb crunch in a microwave-safe dish. Heat on medium power for 1-2 minutes, checking halfway through to ensure it heats evenly. Be cautious not to overheat, as the crumble topping can become soggy.
If you have an air fryer, preheat it to 350°F (175°C). Place the rhubarb crunch in an air fryer-safe dish and heat for about 5-7 minutes. This method helps maintain the crispiness of the oat topping.
On the stovetop, use a double boiler method. Place the rhubarb crunch in a heatproof dish and set it over a pot of simmering water. Cover and heat for about 10-15 minutes, stirring occasionally to ensure even warming.
For a more rustic approach, reheat the rhubarb crunch in a cast-iron skillet. Preheat the skillet over medium heat, add the rhubarb crunch, cover with a lid or foil, and heat for about 10 minutes, stirring occasionally to prevent sticking and ensure even heating.
Best Tools for This Recipe
Oven: Preheat to 350°F (175°C) to bake the rhubarb crunch.
Mixing bowl: Use one to combine the rhubarb, sugar, and flour, and another to mix the oats, brown sugar, and flour.
Baking dish: Spread the rhubarb mixture evenly in this dish before adding the topping.
Measuring cups: Measure out the rhubarb, sugar, oats, brown sugar, and flour accurately.
Measuring spoons: Measure the 3 tablespoons of flour for the rhubarb mixture.
Spatula: Stir the melted butter into the oat mixture until it becomes crumbly.
Knife: Chop the rhubarb into small pieces.
Cutting board: Provide a safe surface to chop the rhubarb.
Microwave or stovetop: Melt the butter before adding it to the oat mixture.
Oven mitts: Protect your hands when placing the baking dish in the oven and removing it after baking.
Timer: Keep track of the 45-minute baking time to ensure the topping is golden brown and the rhubarb is tender.
How to Save Time on Making This Dessert
Prepare the rhubarb in advance: Chop the rhubarb and store it in the fridge up to two days before making the recipe.
Use a food processor: Quickly mix the oats, brown sugar, and flour for the topping by pulsing them in a food processor.
Melt butter in the microwave: Save time by melting the butter in the microwave instead of on the stove.
Pre-measure ingredients: Measure out all your ingredients before you start, so you can mix everything together quickly.
Line the baking dish: Use parchment paper to line the baking dish for easy cleanup.

Rhubarb Crunch Recipe
Ingredients
Filling
- 4 cups rhubarb, chopped
- 1 cup sugar
- 3 tablespoons flour
Topping
- 1 cup oats
- 1 cup brown sugar
- 1 cup flour
- ½ cup butter, melted
Instructions
- Preheat oven to 350°F (175°C).
- In a mixing bowl, combine rhubarb, sugar, and flour. Spread evenly in a baking dish.
- In another bowl, mix oats, brown sugar, and flour. Stir in melted butter until crumbly. Sprinkle over rhubarb mixture.
- Bake for 45 minutes, or until topping is golden brown and rhubarb is tender.
Nutritional Value
Keywords
Suggested Appetizers and Main Courses for This Recipe
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