This delightful rhubarb dump cake is a simple dessert that combines the tartness of rhubarb with a sweet, cake-like topping. The combination of textures and flavors makes it a crowd-pleaser, perfect for potlucks or a cozy family treat. You’ll love its comforting warmth and the way it captures the essence of rhubarb season.

If you’re looking for a dessert that’s both easy to make and utterly delicious, then you’ve come to the right place! We’re diving into the wonderful world of the focus keyphrase, a dessert that’s as comforting as it is simple. This recipe is a delightful blend of tart and sweet, perfect for any occasion.
What is Rhubarb Dump Cake?
Rhubarb dump cake is a straightforward dessert that combines fresh or frozen rhubarb with a cake-like topping. It’s called a “dump cake” because you literally “dump” the ingredients into a baking dish and let the oven do the work. The result is a warm, bubbly dessert with a perfect balance of tart and sweet flavors.
This dessert is a favorite for its simplicity and delicious taste. If you’re looking for other easy dessert options, you can find inspiration on Allrecipes. The beauty of this recipe is that it requires minimal effort but delivers maximum flavor, making it ideal for both novice and experienced bakers.
Ingredients You’ll Need

The beauty of a rhubarb dump cake lies in its simplicity. You won’t need a pantry full of exotic ingredients. Instead, you’ll find that this recipe relies on a few key components that come together to create a stunning dessert. Here’s what you’ll need to get started:
- 6 cups fresh or frozen rhubarb, chopped
- 1 cup granulated sugar
- 1/4 cup all-purpose flour
- 1 box (14.25 ounces) yellow cake mix
- 1 cup (2 sticks) unsalted butter, melted
- Optional: 1 teaspoon ground cinnamon
- Optional: 1/2 cup chopped nuts (such as pecans or walnuts)
For the rhubarb, you can use fresh rhubarb during rhubarb season, or frozen rhubarb year-round. If you’re using frozen rhubarb, there’s no need to thaw it before using. The cake mix provides the base of the topping, and melted butter creates a rich, golden crust. Feel free to add cinnamon for extra warmth and nuts for added texture.
How to Make Rhubarb Dump Cake

Making a rhubarb dump cake is incredibly easy. The steps are simple, making it a perfect recipe for beginner bakers. Follow these instructions, and you’ll have a delicious dessert ready to enjoy in no time.
Step 1: Prepare the Rhubarb
In a baking dish, combine the chopped rhubarb, granulated sugar, and flour. Mix these ingredients gently to ensure the rhubarb is evenly coated. This step helps to create a flavorful base for your dessert.
A helpful tip is to ensure the rhubarb is chopped into roughly equal sizes for even cooking. This will ensure that all the rhubarb pieces cook at the same rate. This step is crucial for achieving that perfect balance of tart and sweet.
Step 2: Add the Cake Mix
Evenly sprinkle the dry cake mix over the rhubarb mixture. Do not mix the cake mix into the rhubarb; the dry mix should create a layer on top. This simple step is what gives the cake its “dump” cake name.
Make sure to cover all the rhubarb with the cake mix. This ensures that the cake mix will bake evenly. If you’re feeling adventurous, you can try using a different flavor of cake mix for a unique twist, like a spice cake mix. This is a great way to experiment with different flavor profiles, and you might even discover your new favorite recipe!
Step 3: Add the Butter and Bake
Pour the melted butter evenly over the cake mix. If desired, sprinkle with cinnamon and nuts. Bake in a preheated oven until the top is golden brown and the rhubarb is bubbly.
A visual cue for doneness is when the top is golden brown and the edges are bubbling. This usually takes about 45-55 minutes. Be careful not to overbake, as this can dry out the cake. The aroma of the baking cake will be irresistible!
Tips for the Best Rhubarb Dump Cake
While a rhubarb dump cake is incredibly easy to make, a few tips can help you achieve the best results. These simple tricks can make a big difference in the final product, ensuring a delicious and perfectly textured dessert.
If you’re looking for variations, why not try a strawberry rhubarb dump cake? The combination of strawberries and rhubarb is a classic, offering a delightful twist on the traditional recipe. This extra flavor dimension will add even more appeal to your dessert.
Use Fresh or Frozen Rhubarb
You can use fresh or frozen rhubarb in this recipe. Both work equally well. If using frozen rhubarb, there’s no need to thaw it; simply add it to the baking dish.
Fresh rhubarb is typically available during rhubarb season, but frozen rhubarb is a convenient option year-round. Ensure the rhubarb is chopped into similar sizes for even cooking and a consistent texture. This also means you can enjoy this easy rhubarb dessert any time of the year!
Don’t Overmix
Avoid mixing the cake mix into the rhubarb mixture. Keep the dry cake mix on top of the rhubarb and butter. This layering is what gives the dump cake its unique texture.
Overmixing can result in a less desirable texture. The goal is to allow the butter to melt and soak into the cake mix, creating a golden, slightly crispy top. This also applies to other simple recipes, such as a no-bake apple pie, where simplicity is key.
Bake Until Golden Brown
The cake is done when the top is golden brown and the rhubarb is bubbly. This usually takes about 45-55 minutes. Keep an eye on the cake to prevent overbaking.
Overbaking can dry out the cake. If the top starts to brown too quickly, you can loosely cover the baking dish with foil during the last part of the baking time. This is also a good tip to remember when making a peppermint brownies, as oven temperatures can vary.
Serving and Storage

Once your rhubarb dump cake is baked, it’s time to enjoy it! Serving and storing this delicious dessert is simple, ensuring you can savor every bite. Here are some tips to make the experience even more enjoyable.
You can also try different variations of this dessert. For example, a rhubarb crisp recipe is another great way to enjoy this tart fruit. The options are endless, and you can easily adapt the recipe to suit your preferences.
Serving Suggestions
Serve the rhubarb dump cake warm, preferably with a scoop of vanilla ice cream or a dollop of whipped cream. The contrast of the warm cake and cold topping is a classic combination.
You can also add a drizzle of custard for extra richness. For a more tart experience, consider a sprinkle of lemon zest. This is a great dessert to serve for gatherings, and it pairs well with other desserts, such as a pink lemonade sheet cake.
Storage Tips
Store leftover rhubarb dump cake in the refrigerator, covered, for up to 3 days. Reheat individual portions in the microwave or oven until warm.
You can also freeze the cake for longer storage. Wrap it tightly in plastic wrap and then in foil. The cake will stay fresh for up to 2 months. Make sure you are using good storage practices, as you would with a Dubai chocolate cake.
Variations and Add-Ins
One of the best things about a rhubarb dump cake is its versatility. You can easily adapt the recipe to suit your tastes and the ingredients you have on hand. Here are some ideas to inspire your own culinary creativity.
For those who are gluten-free, you can easily adapt this recipe. A gluten-free rhubarb dump cake will still offer that same comforting taste. You can also explore different flavor combinations and experiment with other fruit pairings for more rhubarb dessert ideas.
Fruit Combinations
Try adding other fruits to the rhubarb for a different flavor profile. Strawberries and apples are excellent choices. Combining rhubarb with other fruits can create exciting new taste experiences.
For example, a strawberry rhubarb dump cake is a popular choice, offering a delightful blend of sweet and tart flavors. Consider using other fruit, such as apples, to create a rhubarb and apple dump cake. This is a perfect way to use up seasonal fruit, and you can also find inspiration on Serious Eats.
Spice It Up
Add a teaspoon of ground cinnamon or nutmeg to the rhubarb mixture for added warmth. These spices complement the tartness of the rhubarb beautifully. These spices will enhance the flavor of this simple rhubarb dessert.
You can also experiment with other spices, such as a pinch of cardamom or cloves. These spices will add depth to the flavor. Cinnamon is a classic choice, but nutmeg can add a cozy touch to this old fashioned rhubarb cake.
Nuts and Crumbs
Sprinkle chopped nuts, such as pecans or walnuts, over the cake mix before baking. Nuts add a delightful crunch and texture. The addition of nuts will enhance the overall experience.
You can also add a crumble topping for extra texture and flavor. This is like a rhubarb crumble cake. Consider experimenting with a streusel topping for a unique twist. This recipe is a great starting point for a quick rhubarb dessert.
Troubleshooting Common Problems
Even though a rhubarb dump cake is easy to make, you might encounter a few common issues. Don’t worry; most of these are easily fixed. Here’s how to address some typical problems.
If you have any questions, you can always consult online resources or cooking forums. Remember, this recipe is a good starting point for exploring rhubarb dessert recipes. You can also make a quick rhubarb dessert with yellow cake mix.
Cake is Too Runny
If your cake comes out too runny, it might be because you used too much butter or didn’t bake it long enough. Ensure the butter is measured correctly and bake until the top is golden and bubbly.
Another option is to add a tablespoon or two of flour to the rhubarb mixture. This will help absorb some of the excess moisture. If you get a runny cake, this can also be resolved by baking it longer. It is important to remember to bake this cake at the proper temperature.
Cake is Dry
If the cake is dry, you might have overbaked it. Reduce the baking time next time, and keep a closer eye on the cake. Check it frequently to prevent this issue.
You can also add a little more butter to the top before baking. This will add moisture to the cake. It can be caused by the oven temperature being too high. For different baking tips, you can explore other resources, such as The Kitchn.
Cake is Not Sweet Enough
If your cake isn’t sweet enough, you can add more sugar to the rhubarb mixture. Taste the mixture before adding the cake mix, and adjust the sugar level accordingly to suit your preferences.
Another option is to serve the cake with a scoop of vanilla ice cream or a drizzle of whipped cream. These toppings will add sweetness. This is a common issue with a simple rhubarb dessert. You can also learn about types of sugar to use for baking by visiting Types of Sugar in Baking.
Print
rhubarb dump cake Recipe
- Total Time: PT1H5M
- Yield: 12 servings 1x
- Diet: Vegetarian
Description
This easy rhubarb dump cake recipe is a classic dessert that’s perfect for spring and summer. It’s incredibly simple to make, with a sweet and tart flavor that everyone loves.
Ingredients
- 6 cups fresh rhubarb, chopped
- 1 cup granulated sugar
- 1/2 cup all-purpose flour
- 1/2 cup (1 stick) unsalted butter, melted
- 1 box (14.1 ounces) yellow cake mix
- 1 cup water
- Optional: vanilla ice cream or whipped cream for serving
Instructions
- Preheat oven to 350°F (175°C).
- In a 9×13 inch baking dish, combine the chopped rhubarb and granulated sugar.
- Sprinkle the flour evenly over the rhubarb mixture.
- Drizzle the melted butter over the flour.
- Sprinkle the dry cake mix evenly over the butter.
- Pour the water over the cake mix. Do not stir.
- Bake for 45-50 minutes, or until the top is golden brown and the rhubarb is bubbly.
- Let cool slightly before serving. Serve warm with vanilla ice cream or whipped cream, if desired.
Notes
- For a tangier flavor, you can add a tablespoon of lemon juice to the rhubarb mixture.
- If using frozen rhubarb, thaw it completely and drain any excess liquid before using.
- You can substitute other fruits like apples, peaches, or berries for the rhubarb.
- Store leftovers covered at room temperature for up to 2 days or in the refrigerator for up to 4 days.
- Prep Time: PT15M
- Cook Time: PT50M
- Category: Dessert
- Method: Bake
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 300
- Sugar: 35g
- Sodium: 150mg
- Fat: 12g
- Saturated Fat: 7g
- Carbohydrates: 48g
- Protein: 3g







