This delightful rhubarb crunch recipe is a perfect blend of tart and sweet, making it an irresistible dessert for any occasion. The combination of tender rhubarb and a crunchy oat topping creates a mouthwatering treat that is sure to please your taste buds. Whether you're a fan of rhubarb or trying it for the first time, this recipe is a must-try.
If you're not familiar with rhubarb, it's a tart vegetable often used in desserts. You can usually find it in the produce section of your supermarket, especially during the spring and early summer months. Make sure to pick stalks that are firm and brightly colored. The other ingredients like rolled oats, brown sugar, and butter are common pantry staples.

Ingredients For Rhubarb Crunch Recipe
Rhubarb: A tart vegetable that adds a unique flavor to desserts.
Sugar: Used to sweeten the rhubarb mixture.
All-purpose flour: Helps to thicken the rhubarb filling and is also used in the topping.
Rolled oats: Adds a crunchy texture to the topping.
Brown sugar: Provides a rich, caramel-like sweetness to the topping.
Butter: Melted butter helps to bind the topping ingredients together and adds richness.
Technique Tip for This Recipe
When preparing the rhubarb, ensure that it is chopped into uniform pieces. This will help it cook evenly and achieve the desired tender texture. Additionally, when mixing the oats, brown sugar, flour, and melted butter, use your hands to create a crumbly texture. This will result in a more even and crunchy topping.
Suggested Side Dishes
Alternative Ingredients
rhubarb - Substitute with strawberries: Strawberries provide a similar tartness and sweetness, making them a good alternative in desserts.
sugar - Substitute with honey: Honey adds a natural sweetness and a slight floral note, which complements the fruit well.
all-purpose flour - Substitute with cornstarch: Cornstarch can thicken the fruit mixture similarly to flour, though you may need to use slightly less.
rolled oats - Substitute with quinoa flakes: Quinoa flakes offer a similar texture and are a good gluten-free option.
brown sugar - Substitute with coconut sugar: Coconut sugar has a similar caramel-like flavor and can be used in equal amounts.
all-purpose flour - Substitute with almond flour: Almond flour provides a nutty flavor and is a good gluten-free alternative.
butter - Substitute with coconut oil: Coconut oil can be used in the same amount and adds a subtle coconut flavor, which pairs well with fruit.
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How to Store or Freeze This Dessert
Allow the rhubarb crunch to cool completely at room temperature. This helps to set the topping and makes it easier to handle.
For short-term storage, cover the baking dish with plastic wrap or aluminum foil. Alternatively, transfer the dessert to an airtight container. Store in the refrigerator for up to 4 days.
If you plan to freeze the rhubarb crunch, first ensure it is fully cooled. Cut it into individual portions for easier thawing and serving later.
Wrap each portion tightly in plastic wrap, then place them in a freezer-safe bag or container. Label with the date to keep track of freshness.
For optimal quality, consume the frozen rhubarb crunch within 2-3 months. While it can be stored longer, the texture and flavor may begin to degrade.
When ready to enjoy, thaw the dessert in the refrigerator overnight. For a quicker option, use the defrost setting on your microwave.
To reheat, preheat your oven to 350°F (175°C). Place the thawed rhubarb crunch in an oven-safe dish and cover with aluminum foil to prevent the topping from burning. Heat for 15-20 minutes or until warmed through.
For a crispier topping, remove the foil during the last 5 minutes of reheating. This will help to restore some of the original crunchiness.
Serve the reheated rhubarb crunch with a scoop of vanilla ice cream or a dollop of whipped cream for an extra indulgent treat.
How to Reheat Leftovers
Preheat your oven to 350°F (175°C). Place the leftover 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 or until warmed through.
For a quicker method, use a microwave. Place a portion of the rhubarb crunch in a microwave-safe dish. Cover it loosely with a microwave-safe lid or microwave-safe plastic wrap, leaving a small vent for steam to escape. Heat on medium power for 1-2 minutes, checking and stirring halfway through to ensure even heating.
If you prefer a crispier topping, use a toaster oven. Preheat the toaster oven to 350°F (175°C). Place the rhubarb crunch in a toaster oven-safe dish and heat for about 10-15 minutes, or until the topping is crispy and the rhubarb is warmed through.
For an indulgent twist, reheat the rhubarb crunch in a skillet. Melt a small amount of butter in a non-stick skillet over medium heat. Add the rhubarb crunch and cook, stirring occasionally, until it is heated through and the topping is slightly caramelized, about 5-7 minutes.
Essential Tools for This Recipe
Oven: Used to bake the rhubarb crunch at the specified temperature of 350°F (175°C)
Mixing bowl: Needed to combine the rhubarb, sugar, and flour
Baking dish: Used to spread the rhubarb mixture evenly for baking
Mixing bowl: Another bowl is required to mix the oats, brown sugar, flour, and melted butter
Measuring cups: Essential for accurately measuring the rhubarb, sugar, oats, and flour
Measuring spoons: Used to measure the 3 tablespoons of all-purpose flour
Knife: Needed to chop the rhubarb into pieces
Cutting board: Provides a surface to safely chop the rhubarb
Spatula: Useful for spreading the rhubarb mixture evenly in the baking dish and for mixing the topping ingredients
Oven mitts: Important for safely handling the hot baking dish when removing it from the oven
How to Save Time on Making This Dessert
Prepare ingredients in advance: Chop the rhubarb and measure out the sugar and flour the night before to save time on the day of baking.
Use a food processor: Quickly mix the oats, brown sugar, flour, and butter by pulsing them in a food processor for an even and fast blend.
Preheat the oven early: Turn on the oven before you start mixing ingredients so it's ready to go when you are.
Line the baking dish: Use parchment paper to line the baking dish for easy cleanup and quick removal of the rhubarb crunch.

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 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, flour, and melted butter. Sprinkle over rhubarb mixture.
- Bake for 45 minutes or until the topping is golden brown and the rhubarb is tender.
Nutritional Value
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