Rhubarb desert dump cakes consist of simple, delicious layers, combining the tartness of rhubarb with the sweetness of cake mix, creating a quick and easy dessert. This recipe utilizes minimal effort, perfect for busy weeknights or impromptu gatherings, offering a delightful treat for any occasion. The combination of sweet and tart flavors makes this dish a guaranteed crowd-pleaser.
This easy dessert is a great way to use up fresh rhubarb. It’s a fantastic recipe for any occasion.

Recipe Overview
| Prep Time | Cook Time | Total Time | Servings | Difficulty | Cuisine |
|---|---|---|---|---|---|
| 15 minutes | 45-55 minutes | 1 hour, 10 minutes | 8-10 servings | Easy | American |
Why This Recipe Works
This rhubarb desert dump cake is a winning recipe because of its simplicity and the delightful contrast of textures and flavors. The cake’s structure is incredibly straightforward, requiring minimal steps and ingredients, making it accessible even for novice bakers. The tart rhubarb filling balances the sweetness of the cake mix, ensuring each bite offers a harmonious taste experience.
I stumbled upon this recipe during a time crunch, seeking a dessert that wouldn’t keep me chained to the kitchen. The ease with which the ingredients combine and transform into something so delicious was truly amazing. It has since become a staple in my recipe collection because it consistently delivers perfect results.
The beauty of a dump cake lies in its forgiving nature; there’s room to adjust the sweetness or add extra flavorings, making it customizable to your preferences. The recipe’s adaptability, its ease of preparation, and the delicious rhubarb flavor combination make it a standout dessert choice.
Ingredients
| Ingredient | Quantity | Notes & Alternatives |
|---|---|---|
| Fresh Rhubarb, chopped | 6 cups | Frozen rhubarb can be used; thaw and drain excess liquid. |
| Granulated Sugar | 1 cup | Adjust to taste based on the rhubarb’s tartness; brown sugar adds depth. |
| All-Purpose Flour | 1/4 cup | Helps thicken the rhubarb; cornstarch is a suitable alternative. |
| Yellow Cake Mix | 1 box (15.25 oz) | White cake mix or vanilla cake mix will work fine as a substitute. |
| Unsalted Butter, melted | 1/2 cup (1 stick) | Salted butter can be used; reduce salt in recipe if desired. |
Step-by-Step Instructions
-
Prepare the Rhubarb Filling
Combine the chopped rhubarb, granulated sugar, and all-purpose flour in a large bowl.
-
Assemble the Cake
Pour the rhubarb mixture into a 9×13 inch baking dish; spread it evenly across the bottom.
-
Add the Cake Mix
Sprinkle the dry yellow cake mix evenly over the rhubarb mixture, making sure to cover it completely.
-
Drizzle with Butter
Drizzle the melted butter evenly over the cake mix; ensure the entire surface is coated.
-
Bake
Bake in a preheated oven at 350°F (175°C) for 45-55 minutes, or until the top is golden brown and the rhubarb is bubbly.
-
Cool and Serve
Allow the rhubarb dump cake to cool slightly before serving; it tastes even better with a scoop of vanilla ice cream.

Chef Tips for Perfect Results
- Use Fresh Rhubarb: Fresh rhubarb provides the best flavor and texture; consider using it when in season for optimal taste.
- Don’t Overmix or Overbake: Avoid overmixing the rhubarb mixture and prevent overbaking to keep the cake moist.
- Even Butter Distribution: Ensure the melted butter is evenly distributed over the cake for a consistent crust.
- Adjust Sweetness: Start with the recommended sugar amount; adjust based on the rhubarb’s natural tartness.
- Cooling Time: Allow the cake to cool slightly before serving for better texture and flavor.
- Consider Toppings: Add cinnamon, nuts, or oats on top before baking for extra flavor and texture variety.
Common Mistakes to Avoid
- Not Using Enough Sugar: Insufficient sugar can leave the rhubarb too tart; taste the mixture and adjust accordingly.
- Uneven Butter Drizzle: An uneven butter distribution can result in dry patches; ensure the cake mix is completely coated.
- Overbaking: Overbaking leads to a dry cake; check for a golden-brown top, not a burned one.
- Using Too Much Flour: Too much flour in the rhubarb mixture can make it thick and pasty; use the correct measure.
- Skipping the Cooling: Serving the cake too soon can make it seem underbaked; letting it cool improves texture.
Variations and Substitutions
| Ingredient | Substitution | Impact on Flavor |
|---|---|---|
| Rhubarb | Apples, berries, peaches | Changes the flavor profile – sweeter fruits will make the dessert less tart. |
| Yellow Cake Mix | White cake mix or spice cake mix | Alters the sweetness and adds subtle spice notes. |
| Granulated Sugar | Brown sugar | Adds a deeper, caramel-like flavor. |
| Butter | Margarine | Provides a similar texture with a slightly different flavor. |
| All-Purpose Flour | Cornstarch | Thickens the rhubarb filling. |
Serving Suggestions and Pairings
Rhubarb desert dump cake is best served warm, ideally with a scoop of vanilla ice cream or a dollop of whipped cream. It’s often enjoyed as a dessert at family gatherings, potlucks, and summer barbecues. Consider pairing it with a simple cup of coffee or a glass of cold milk to complement its tangy sweetness.
This delicious dump cake is also perfect for celebrations, such as birthdays or holidays like Mother’s Day, where a homemade treat can add an extra special touch. The balance of flavors also makes it a great choice for casual weeknight dinners.
Storage and Reheating
| Method | Duration | Instructions |
|---|---|---|
| Refrigerator | 3-4 days | Store in an airtight container. |
| Freezer | 2-3 months | Wrap tightly in plastic wrap and then foil. |
| Reheating (oven) | 10-15 minutes | Bake at 350°F (175°C) until warmed. |
| Reheating (microwave) | 30-60 seconds | Microwave in short intervals until heated. |
Nutritional Information
| Nutrient | Amount per Serving |
|---|---|
| Calories | Approx. 350 |
| Protein | Approx. 4g |
| Fat | Approx. 15g |
| Carbohydrates | Approx. 50g |
| Fiber | Approx. 2g |
| Sugar | Approx. 30g |
| Sodium | Approx. 300mg |
Approximate values.
Frequently Asked Questions
Can I use frozen rhubarb instead of fresh in rhubarb dump cakes?
Yes, you can absolutely use frozen rhubarb. Ensure you thaw the rhubarb completely and drain any excess liquid before using it. This prevents the filling from becoming too watery and ensures the cake bakes properly.
How will I know when my rhubarb desert dump cake is done?
The rhubarb dump cake is done when the top is golden brown and the rhubarb filling is bubbling around the edges. A slight jiggle in the center is okay, but the cake should not be overly wobbly. A toothpick inserted should come out relatively clean.
What do I do if my rhubarb dessert dump cake is too soggy?
If your dump cake seems too soggy, it might be due to too much moisture from the rhubarb or not enough baking time. Ensure you drain the thawed rhubarb well. You can place it back in the oven for a few extra minutes to help it dry out.
Can I make this dessert ahead of time?
Yes, you can prepare the rhubarb dump cake ahead of time, up to 24 hours. Assemble the cake, cover it tightly, and refrigerate. Before serving, bake according to the recipe instructions; you may need to add a few minutes to the baking time.
What is the best way to serve a rhubarb desert dump cake?
Rhubarb desert dump cake is best served warm, just out of the oven. A scoop of vanilla ice cream or a dollop of whipped cream is the perfect complement. It tastes delicious on its own, and you can also add a sprinkle of cinnamon.
For more baking tips, check out this great resource: Allrecipes. Also, here is a guide for the best desserts: Simply Recipes.
Conclusion
Rhubarb desert dump cakes combine simplicity and flavor, offering an easy yet impressive dessert. It’s a fantastic way to enjoy the tartness of rhubarb balanced with sweet cake, perfect for any occasion. Try this recipe for a quick, delicious dessert that captures the essence of homemade goodness. This dump cake will surely become a favorite in your dessert repertoire.
Easy Rhubarb Desert Dump Cakes
- Total Time: 65
- Yield: 8-10 servings 1x
- Diet: Vegetarian
Description
A quick and flavorful dessert combining tart rhubarb with a sweet cake mix. Perfect for using fresh rhubarb and easy to assemble with minimal effort.
Ingredients
6 cups fresh rhubarb, chopped
2 cups granulated sugar
2 boxes (12 oz each) yellow cake mix
1/2 cup soft margarine (vegan or halal alternative), melted
Instructions
Preheat oven to 375°F (190°C)
Line a 9×13-inch baking dish with parchment paper
Toss rhubarb with sugar in the dish and spread evenly
Sprinkle cake mix in clumps directly over the rhubarb layer
Drizzle melted margarine over the cake mix
Bake for 45-55 minutes until cake is golden and firm to the touch
Cool slightly before serving
Notes
Frozen rhubarb can be used (thaw and drain liquid first)
Add a can of halal-certified coconut milk for extra flavor
Cover and store leftovers at room temperature for up to 3 days
- Prep Time: 15
- Cook Time: 50
- Category: DESSERTS
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving (1 piece)
- Calories: 320
- Sugar: 25g
- Sodium: 180mg
- Fat: 10g
- Saturated Fat: 6g
- Carbohydrates: 48g
- Fiber: 3g
- Protein: 3g
- Cholesterol: 5mg