This delightful rhubarb crunch recipe 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 mouthwatering treat that is sure to please your taste buds. Whether you're a seasoned baker or a novice in the kitchen, this recipe is simple to follow and yields delicious results.
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 look for fresh, firm stalks that are brightly colored. If rhubarb is not available, you might need to visit a specialty grocery store or a farmer's market.

Ingredients For Rhubarb Crunch Recipe
Rhubarb: A tart vegetable that adds a unique flavor to desserts. Look for fresh, firm stalks.
Sugar: Used to sweeten the rhubarb and balance its tartness.
Flour: Helps to thicken the rhubarb mixture and is also used in the crumbly topping.
Oats: Adds texture and a nutty flavor to the topping.
Brown sugar: Provides a rich, caramel-like sweetness to the topping.
Butter: Melted and mixed with the dry ingredients to create a crumbly topping.
Technique Tip for This Recipe
When preparing the rhubarb for this recipe, make sure to chop it into uniform pieces to ensure even cooking. Additionally, allowing the butter to cool slightly after melting will help it incorporate better with the oats and brown sugar, resulting in a perfectly crumbly topping.
Suggested Side Dishes
Alternative Ingredients
rhubarb - Substitute with strawberries: Strawberries provide a similar tartness and sweetness, making them a good substitute in desserts.
sugar - Substitute with honey: Honey adds a natural sweetness and a bit of extra moisture to the dish.
flour - Substitute with cornstarch: Cornstarch can thicken the mixture similarly to flour, though you may need to use less.
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 the same quantity.
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 mimic the richness of butter and adds a slight coconut flavor.
Alternative Recipes Similar to This Dish
How to Store or Freeze This Recipe
- Allow the rhubarb crunch to cool completely after baking. This ensures that the topping sets properly and doesn't become soggy.
- Once cooled, cover the baking dish tightly with plastic wrap or aluminum foil. Alternatively, transfer the rhubarb crunch to an airtight container.
- Store the covered rhubarb crunch in the refrigerator. It will stay fresh for up to 4 days.
- For longer storage, consider freezing. Cut the rhubarb crunch into individual portions for easy thawing and serving.
- Wrap each portion in plastic wrap and then place them in a freezer-safe bag or container. This double-layer protection helps prevent freezer burn.
- Label the container with the date to keep track of its freshness. The rhubarb crunch can be frozen for up to 3 months.
- To reheat, thaw the rhubarb crunch in the refrigerator overnight. Once thawed, preheat your oven to 350°F (175°C) and bake for 10-15 minutes, or until heated through and the topping is crisp again.
- If you prefer, you can also reheat individual portions in the microwave. Heat on medium power for 1-2 minutes, checking frequently to avoid overcooking.
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 option, use the microwave. Place a portion of the rhubarb crunch on a microwave-safe plate. Cover it loosely with a microwave-safe lid or microwave-safe plastic wrap, leaving a small vent. Heat on medium power for 1-2 minutes, checking halfway through to ensure it heats evenly.
If you prefer a crispier topping, use a toaster oven. Set the toaster oven to 350°F (175°C) and place the rhubarb crunch in an oven-safe dish. Heat for about 10-15 minutes, keeping an eye on the topping to ensure it doesn't over-brown.
For an extra touch, consider reheating on the stovetop. Place a non-stick skillet over medium-low heat. Add a portion of the rhubarb crunch and cover with a lid. Heat for about 5-7 minutes, stirring occasionally to ensure even warming and to prevent sticking.
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 will help maintain the crispiness of the topping while warming the rhubarb filling.
Best Tools for Making This Recipe
Oven: Preheat to 350°F (175°C) to bake the rhubarb crunch.
Mixing bowl: Combine rhubarb, sugar, and flour in one, and oats, brown sugar, flour, and melted butter in another.
Baking dish: Spread the rhubarb mixture evenly in this dish before adding the crumbly topping.
Measuring cups: Measure out the rhubarb, sugar, oats, brown sugar, and flour accurately.
Measuring spoons: Measure the 3 tablespoons of flour precisely.
Knife: Chop the rhubarb into small pieces.
Cutting board: Use this surface to chop the rhubarb safely.
Wooden spoon: Mix the ingredients in the bowls thoroughly.
Spatula: Spread the crumbly topping evenly over the rhubarb mixture.
Oven mitts: Protect your hands when placing the baking dish in the oven and removing it after baking.
Cooling rack: Allow the rhubarb crunch to cool slightly after baking.
How to Save Time on This Recipe
Prepare the rhubarb: Chop the rhubarb in advance and store it in the fridge 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.
Pre-measure ingredients: Measure out the sugar, flour, and other ingredients ahead of time and keep them in separate containers.
Line the baking dish: Use parchment paper to line the baking dish for easy cleanup.
Batch cooking: Double the recipe and freeze half for a quick dessert later.

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, flour, and melted butter until crumbly. Sprinkle over rhubarb mixture.
- Bake for 40 minutes or until topping is golden brown and rhubarb is tender.
Nutritional Value
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Suggested Appetizers and Main Courses
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