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Ever craved a dessert that’s both comforting and incredibly easy to make? Our Rhubarb Dump Cake recipe is the answer! This delightful cake combines the tartness of rhubarb with the sweetness of a classic cake mix, creating a harmonious blend of flavors and textures. Perfect for a quick weeknight dessert or a casual get-together, this dump cake is a guaranteed crowd-pleaser. Inspired by simple, home-style baking, this Rhubarb Dump Cake requires minimal effort but delivers maximum flavor. Let’s dive into the magic of this effortless dessert!
Why You’ll Love This Rhubarb Dump Cake
- Effortless Prep: Ready to bake in just 10 minutes.
- Minimal Ingredients: Requires only a handful of pantry staples.
- Budget-Friendly: A delicious dessert that won’t break the bank.
- Crowd-Pleasing Flavor: The perfect balance of tart and sweet.
- Versatile: Easily customizable with different cake mix flavors.
- Cozy Comfort Food: Rekindles warm, comforting memories with every bite.
- Easy Cleanup: One-pan baking means less mess.
- Irresistible Aroma: Fills your kitchen with a sweet, fruity scent.
Compared to traditional rhubarb pies, this dump cake is significantly easier and faster to prepare. The aroma that fills your kitchen while it bakes is simply irresistible, evoking a sense of cozy family moments.
Ingredients Needed
- 4 cups (500g) fresh or frozen rhubarb, chopped
- 1 box (430g) yellow cake mix
- Âľ cup (170g) granulated sugar
- Âľ cup (170g) unsalted butter, melted
- 1 teaspoon vanilla extract
- Optional: ½ cup chopped nuts (pecans, walnuts)
For the rhubarb, choose stalks that are firm and vibrant in color. Frozen rhubarb works just as well, especially if fresh rhubarb is out of season. Remember to thaw and drain the frozen rhubarb to prevent a soggy cake. Lightly toast the nuts before chopping to enhance their flavor. You can find high-quality vanilla extract at most grocery stores or specialty baking shops.
Essential Equipment List
- 9×13 inch baking dish: For even baking and perfect cake thickness.
- Mixing bowl: For combining dry ingredients.
- Measuring cups and spoons: Ensure accurate ingredient ratios.
- Spatula or wooden spoon: For spreading the rhubarb and dry mix evenly.
A good quality baking dish will distribute heat evenly, preventing hot spots and ensuring a perfectly baked **Rhubarb Dump Cake**. A food processor can speed up the chopping of nuts, but a knife works just fine. If you don’t have a traditional mixing bowl, any large bowl will do.
Recipe Details
- Prep Time: 10 minutes
- Cook Time: 35-40 minutes
- Total Time: 45-50 minutes
- Servings: 12
- Difficulty: Easy
This **Rhubarb Dump Cake** is perfect for scaling up for a larger gathering or halving for a smaller treat. The ease of preparation makes it ideal for any occasion.
Step-by-Step Instructions
Step 1: Prepare the Rhubarb
Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking dish. In the greased baking dish, spread the chopped rhubarb evenly over the bottom. Sprinkle the granulated sugar evenly over the rhubarb. This step helps to draw out some of the moisture from the rhubarb.
Step 2: Add the Cake Mix
Evenly sprinkle the dry yellow cake mix over the sugared rhubarb. Make sure to distribute it as uniformly as possible. Try to break up any large clumps of the cake mix to ensure even baking.
Step 3: Drizzle with Butter and Bake
Pour the melted butter evenly over the cake mix. Drizzle the vanilla extract over the top. Sprinkle with chopped nuts (if using). Bake in the preheated oven for 35-40 minutes, or until the top is golden brown and the rhubarb is tender. Let it cool slightly before serving. The edges should be crisp and bubbly when it’s ready.
CHECK OUT: Pineapple Carrot Cake with Cream Cheese Frosting – A delightful twist for a fruity treat!
Tips for Success

- Prevent a Soggy Cake: Thaw and drain frozen rhubarb thoroughly.
- Ensure Even Baking: Distribute cake mix and melted butter evenly.
- Adjust Sweetness: Reduce sugar if rhubarb is very tart.
- Check for Doneness: The top should be golden brown and the rhubarb tender.
- Let It Cool: Cooling allows the cake to set slightly before serving.
If the base starts to brown too quickly, you can loosely cover the baking dish with foil for the last 10-15 minutes of baking. For a richer flavor, use brown butter instead of melted butter.
Variations & Substitutions
- Cake Mix Flavors: Try white, spice, or lemon cake mix for different flavors.
- Fruit Combinations: Add strawberries, raspberries, or apples to the rhubarb.
- Nut Toppings: Use almonds, pecans, or walnuts for added crunch.
- Dairy-Free: Use melted coconut oil instead of butter.
- Sugar Substitute: Use your favorite sugar substitute for a lower sugar option.
For a gluten-free version, use a gluten-free cake mix. To boost the flavor, add a pinch of cinnamon or nutmeg to the cake mix. Honey can be used as a substitute for sugar, but it will result in a slightly stickier texture.
Serving Suggestions & Pairings with Rhubarb Dump Cake
- Vanilla Ice Cream: A classic pairing that complements the tartness of the rhubarb.
- Whipped Cream: Adds a light and airy touch.
- Custard Sauce: Provides a rich and creamy contrast.
- Fresh Berries: Enhance the fruity flavor with strawberries or raspberries.
This **Rhubarb Dump Cake** is a delightful addition to any spring or summer gathering. A glass of chilled lemonade or iced tea is the perfect beverage pairing. For an elegant presentation, dust the cake with powdered sugar before serving.
Health Benefits
Rhubarb is a good source of vitamin K, which is important for bone health, and fiber, which aids digestion. While this Rhubarb Dump Cake is a dessert, it can be a part of a balanced diet when enjoyed in moderation. Fiber promotes a feeling of fullness, which can help with weight management. Enjoying homemade desserts can provide a sense of satisfaction and well-being.
Storage & Reheating
Store leftover Rhubarb Dump Cake in an airtight container in the refrigerator for up to 3-4 days. To reheat, you can warm individual slices in the microwave for 20-30 seconds. For a crispier texture, reheat in the oven at 350°F (175°C) for 10-15 minutes. To freeze, wrap individual slices tightly in plastic wrap and place them in a freezer bag for up to 2 months. Thaw overnight in the refrigerator before reheating. Make sure the cake is completely cool before sealing to prevent condensation and sogginess.

Frequently Asked Questions
How Do I Avoid a Soggy Cake?
Ensure that the rhubarb is well-drained if using frozen rhubarb. Also, avoid adding too much butter, as this can contribute to sogginess.
Can I Use a Different Type of Fruit?
Yes, you can substitute other fruits such as apples, berries, or peaches. Adjust the sugar level depending on the sweetness of the fruit.
Can I Make This Cake Gluten-Free?
Yes, simply use a gluten-free cake mix. Check the ingredients of all other components to ensure they are also gluten-free.
Can I Add Spices?
Absolutely! Cinnamon, nutmeg, or ginger can add a warm and comforting flavor.
How Do I Know When the Cake Is Done?
The top should be golden brown and the rhubarb tender. A toothpick inserted into the center should come out clean, although it may have some moisture from the fruit.
Nutritional Information
Estimated nutritional information per serving:
- Calories: 350
- Fat: 15g
- Carbs: 50g
- Protein: 3g
Please note that the exact values may vary based on specific ingredients and portion sizes. Use a nutrition calculator for precise details.
More Delicious Dishes to Explore
Craving more easy and delightful desserts? Try these gems!
- Pecan Pie Dump Cake – A sweet and nutty twist on a classic pie.
- Carrot Cake Oatmeal Bake – A healthy and delicious breakfast or dessert option.
- Apple Pie Crisp – A comforting and easy apple dessert with a crunchy topping.
Conclusion
Our Rhubarb Dump Cake is a fast, flavorful, and crowd-pleasing dessert that’s perfect for any occasion. Whip it up tonight and tag us with your masterpiece! Share this recipe with your friends and family who would love it! Join our vibrant community on Facebook and Pinterest for daily recipe inspiration, cooking tips, and more tasty ideas!
Happy cooking! Let us know how it goes—comment below!

Rhubarb Dump Cake
- Total Time: 45–50 minutes
- Yield: 12 servings
- Diet: Vegetarian
Description
Rhubarb Dump Cake is the ultimate fuss-free dessert, blending tart rhubarb with sweet cake mix for a nostalgic, comforting treat. With just 10 minutes of prep and pantry staples, this one-pan wonder delivers a golden, bubbly masterpiece that’s perfect for weeknights or potlucks. Serve it warm with ice cream for a slice of heaven!
Ingredients
4 cups (500g)Â fresh or frozen rhubarb, chopped
1 box (430g)Â yellow cake mix
Âľ cup (170g)Â granulated sugar
Âľ cup (170g)Â unsalted butter, melted
1 teaspoon vanilla extract
Optional: ½ cup chopped nuts (pecans, walnuts)
Instructions
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Prep Rhubarb:
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Preheat oven to 350°F (175°C). Grease a 9×13-inch baking dish.
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Spread rhubarb evenly in the dish. Sprinkle sugar over the top.
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Layer Cake Mix:
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Sprinkle dry cake mix evenly over the rhubarb, breaking up clumps.
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Add Butter & Bake:
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Drizzle melted butter and vanilla over the cake mix. Top with nuts (if using).
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Bake for 35–40 minutes until golden and bubbly. Cool slightly before serving.
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Notes
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For frozen rhubarb:Â Thaw and drain well to avoid sogginess.
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Customize:Â Swap cake mix flavors (spice, lemon) or add berries.
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Storage: Keep refrigerated for 3–4 days or freeze for up to 2 months.
- Prep Time: 10 minutes
- Cook Time: 35–40 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice
- Calories: 350
- Sugar: 30g
- Sodium: 300mg
- Fat: 15g
- Saturated Fat: 9g
- Unsaturated Fat: 5g
- Trans Fat: 0g
- Carbohydrates: 50g
- Fiber: 2g
- Protein: 3g
- Cholesterol: 30mg
Keywords: Rhubarb dump cake, easy dessert, spring baking