We’ve discovered the ultimate dessert that’ll make you look like a baking genius with minimal effort – blueberry dump cake! This wonderfully simple dessert gets its quirky name from the literal “dumping” of ingredients into a pan, making it perfect for busy weeknights or unexpected guests.
The magic happens when fresh or frozen blueberries meet buttery cake mix and transform into a golden, bubbling masterpiece in your oven. What we love most about this recipe is how it delivers maximum flavor with minimum fuss – no mixing bowls, no complicated techniques, just pure deliciousness.
Whether you’re a novice baker or simply short on time, this dump cake proves that impressive desserts don’t require impressive skills. The result is a perfectly sweet treat with tender cake topping and juicy blueberry filling that’ll have everyone asking for seconds.
Ingredients
We’ve organized these simple ingredients into two categories to make preparation even easier. Each component plays a crucial role in creating the perfect balance of juicy fruit and buttery cake layers.
For the Blueberry Base
- 6 cups fresh or frozen blueberries (do not thaw if frozen)
- 3/4 cup granulated sugar
- 2 tablespoons cornstarch
- 1 tablespoon fresh lemon juice
- 1 teaspoon vanilla extract
- 1/4 teaspoon salt
For the Cake Topping
- 1 box (15.25 oz) yellow cake mix
- 1/2 cup unsalted butter (1 stick) melted
- 1/3 cup whole milk
- 2 large eggs room temperature
- 1 teaspoon vanilla extract
- 1/4 teaspoon ground cinnamon
- 2 tablespoons coarse sugar for sprinkling
Equipment Needed

Creating this delectable blueberry dump cake requires just a few basic kitchen tools that most home bakers already have on hand. We’ve organized the essential equipment to help you prepare this simple dessert with confidence.
Baking Dish: A 9×13 inch rectangular baking dish works perfectly for this recipe. Glass or ceramic dishes distribute heat evenly and allow you to monitor the browning process. Metal pans also work well if that’s what you have available.
Mixing Bowls: Two medium-sized mixing bowls are necessary for preparing the blueberry base and cake topping separately. Stainless steel or glass bowls provide the best results for combining ingredients thoroughly.
Measuring Tools: Accurate measurements ensure consistent results every time. You’ll need measuring cups for both dry and liquid ingredients plus measuring spoons for smaller quantities like vanilla extract and spices.
Whisk: A standard wire whisk helps blend the cake topping ingredients smoothly. This tool ensures the eggs incorporate fully and eliminates any lumps in the batter.
Large Spoon or Spatula: Use this for gently folding the blueberry mixture and spreading it evenly in your baking dish. A rubber spatula works particularly well for scraping bowls clean.
Oven Thermometer: While optional, an oven thermometer helps verify your oven reaches the correct 350°F temperature. Accurate temperature control prevents underbaking or overbaking your dump cake.
Cooling Rack: Allow your finished cake to cool properly on a wire cooling rack. This prevents the bottom from becoming soggy and helps maintain the perfect texture contrast between the tender cake and juicy blueberries.
Instructions

We’ll walk through each step to create this effortless blueberry dump cake. The process remains simple and straightforward from start to finish.
Prep the Pan and Oven
We begin by preheating our oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish with non-stick spray or butter to prevent sticking and ensure easy removal.
Prepare the Blueberry Layer
We combine 6 cups of fresh blueberries with 3/4 cup granulated sugar in one of our medium mixing bowls. Add 2 tablespoons cornstarch and mix gently to coat the berries evenly. Stir in 1 tablespoon fresh lemon juice and 1 teaspoon vanilla extract until well combined. Sprinkle 1/4 teaspoon salt over the mixture and fold everything together. Pour this prepared blueberry mixture into our greased baking dish and spread it evenly across the bottom.
Add the Cake Mix Layer
We open our box of yellow cake mix and sprinkle it evenly over the blueberry layer. The cake mix should cover the fruit completely but we don’t need to mix or stir anything together. This creates distinct layers that will bake into perfect texture.
Add the Butter
We prepare our cake topping by whisking together 1/2 cup melted unsalted butter with 1/3 cup whole milk in our second mixing bowl. Beat in 2 large eggs one at a time followed by 1 teaspoon vanilla extract. Pour this butter mixture evenly over the cake mix layer. Sprinkle 1/4 teaspoon ground cinnamon across the top followed by 2 tablespoons coarse sugar for extra texture and sweetness.
Bake the Dump Cake
We place our assembled dump cake in the preheated oven and bake for 45 to 60 minutes. The cake is ready when the top turns golden brown and the blueberry layer bubbles around the edges. We can test doneness by inserting a toothpick into the cake portion which should come out mostly clean with just a few moist crumbs.
Directions for Serving

We recommend allowing our blueberry dump cake to cool for at least 15 minutes after removing it from the oven. This cooling period helps the filling set properly and prevents burns from the hot juicy blueberries.
Temperature Options
Our blueberry dump cake tastes delicious when served warm or at room temperature. Warm servings highlight the tender cake texture and bubbling fruit filling. Room temperature portions offer a more settled consistency that many guests prefer.
Classic Accompaniments
We suggest pairing each slice with a generous scoop of vanilla ice cream. The cold creamy texture creates a perfect contrast against the warm fruity cake. Freshly whipped cream also makes an excellent topping that complements the blueberry flavors beautifully.
Portion Guidelines
Cut our 9×13 inch cake into 12 equal squares for standard servings. Larger appetites may appreciate bigger portions cut into 8 generous pieces. We use a sharp knife to create clean cuts through both the cake layer and blueberry filling.
Presentation Tips
Serve each portion on individual dessert plates to showcase the golden brown top and vibrant purple filling. We like to add a few fresh blueberries as garnish when available. A light dusting of powdered sugar can elevate the visual appeal for special occasions.
Storage and Reheating
Leftover portions can be stored covered in the refrigerator for up to 3 days. We recommend reheating individual servings in the microwave for 20 to 30 seconds to restore the warm comforting temperature that makes this dessert so appealing.
Make-Ahead Instructions

Planning ahead transforms this blueberry dump cake into an even more convenient dessert option for busy schedules. We recommend preparing the entire cake up to 3-4 days before serving for optimal freshness and flavor retention.
Refrigeration Storage: Allow the baked cake to cool completely at room temperature before covering. We suggest using plastic wrap or aluminum foil to seal the 9×13 inch pan tightly. Store the covered cake in the refrigerator where it maintains quality for up to 3-4 days without compromising texture or taste.
Freezer Storage: Cool the cake thoroughly before freezing to prevent ice crystal formation. Transfer portions to a freezer-safe container or wrap the entire pan securely in multiple layers of plastic wrap followed by aluminum foil. Properly stored blueberry dump cake remains fresh in the freezer for up to 3 months.
Storage Method | Duration | Container Type |
---|---|---|
Refrigeration | 3-4 days | Covered pan or airtight container |
Freezing | 3 months | Freezer-safe container or wrapped pan |
Reheating Guidelines: Warm the cake before serving to restore its optimal texture and enhance the blueberry flavors. We find that gentle reheating in a 300°F oven for 10-15 minutes produces the best results. Individual portions reheat quickly in the microwave using 30-second intervals until warmed through. Room temperature cake also tastes delicious if preferred without reheating.
Storage Tips

We recommend storing your blueberry dump cake in an airtight container to maintain its freshness and prevent it from drying out. The cake will stay delicious in the refrigerator for 3 to 5 days when properly stored.
For longer storage needs, freezing works exceptionally well with this dessert. Allow the cake to cool completely before wrapping it tightly or placing it in a freezer-safe container. Your frozen blueberry dump cake will maintain its quality for up to 3 months.
Storage Method | Duration | Container Type |
---|---|---|
Refrigeration | 3-5 days | Airtight container |
Freezing | Up to 3 months | Freezer-safe container |
Reheating brings back the warm comfort we love about this dessert. For individual servings, we suggest microwaving for 20 to 30 seconds until heated through. When reheating larger portions, cover the baking dish and warm it in a 350°F (175°C) oven for about 15 minutes.
Fresh blueberries make an excellent addition when serving reheated cake, adding extra bursts of flavor and appealing texture contrast. We find that serving the warmed cake with vanilla ice cream creates the perfect temperature and flavor balance that enhances the overall dessert experience.
The key to successful storage lies in using proper airtight containers that prevent moisture loss and maintain the cake’s tender texture. This simple step ensures that each serving tastes as delightful as when we first pulled it from the oven.
Recipe Variations

Our blueberry dump cake serves as the perfect foundation for exciting flavor combinations and dietary adaptations. These variations maintain the same simple preparation method while adding unique twists to suit different tastes and needs.
Mixed Berry Dump Cake
We love combining blueberries with other berries to create a more complex flavor profile. Replace 2 cups of the blueberries with fresh or frozen raspberries, strawberries, or blackberries for a vibrant mixed berry experience. The combination of tart raspberries and sweet strawberries creates beautiful color contrast against the blueberries. Frozen mixed berry blends work perfectly for this variation and often cost less than buying individual berries. Keep the same measurements for sugar and cornstarch since mixed berries release similar amounts of juice during baking.
Lemon Blueberry Dump Cake
Bright lemon flavors complement blueberries beautifully in this refreshing variation. Add 2 tablespoons of fresh lemon zest to the blueberry mixture along with an extra tablespoon of lemon juice. Replace the vanilla extract in the cake topping with lemon extract for enhanced citrus flavor. We recommend using lemon cake mix instead of yellow cake mix when available. A light dusting of powdered sugar mixed with lemon zest makes an elegant finishing touch. This version tastes especially refreshing during summer months and pairs wonderfully with lemon ice cream.
Gluten-Free Option
Converting our blueberry dump cake to gluten-free requires only one simple substitution. Replace the regular yellow cake mix with your favorite gluten-free cake mix brand. We’ve tested this variation with several gluten-free mixes and found they perform equally well in dump cake applications. The texture remains tender and the flavors stay perfectly balanced. Check that all other ingredients including vanilla extract are certified gluten-free if serving guests with celiac disease. Baking time may vary slightly depending on the gluten-free mix used so check for doneness at the 45-minute mark.
Tips for Perfect Blueberry Dump Cake

We’ve discovered several essential techniques that guarantee excellent results every time we make this beloved dessert. These professional tips transform a simple recipe into a bakery-quality treat that impresses family and guests alike.
Even Coverage Creates Uniform Results
Distributing the cake mix evenly across the blueberry layer ensures consistent texture throughout our dessert. We sprinkle the dry cake mix systematically from one corner to the other, making sure no areas remain uncovered. This technique prevents soggy spots and creates that perfect golden brown crust we all love.
Never Mix the Layers
Resisting the urge to stir ingredients together is crucial for achieving the signature dump cake texture. We simply layer each component without mixing, allowing the ingredients to naturally combine during the baking process. This hands-off approach creates distinct layers that make each bite perfectly balanced.
Temperature Control Matters
Preheating our oven to exactly 350°F (175°C) ensures proper cooking from the moment we place the dish inside. We recommend using an oven thermometer to verify accuracy, as temperature variations can affect both texture and baking time. Consistent heat distribution helps achieve that golden brown top while keeping the blueberry filling perfectly bubbling.
Fresh and Frozen Blueberries Work Equally Well
Flexibility with blueberry types allows us to make this dessert year-round without compromising quality. Fresh blueberries provide bright flavor and firm texture, while frozen berries release more juice during baking for an extra saucy filling. We never thaw frozen blueberries before using them, as this prevents excess moisture from affecting the cake layer.
Butter Distribution Techniques
Placing butter strategically across the cake mix surface ensures even browning and rich flavor throughout. We either slice cold butter into thin pats and distribute them evenly, or drizzle melted butter in a zigzag pattern across the entire surface. Both methods create that essential buttery richness that makes dump cake irresistible.
Timing the Perfect Doneness
Baking for 40 to 60 minutes allows us to achieve the ideal balance between set cake and bubbling fruit. We look for a golden brown surface and vigorous bubbling around the edges as our visual cues. The top should spring back lightly when touched, indicating the cake layer has properly set.
Serving Temperature Enhances Flavor
Allowing our dump cake to cool for 15 minutes before serving helps the filling set while maintaining that comforting warmth. We serve it warm with vanilla ice cream or fresh whipped cream to complement the sweet and tart blueberry flavors. Room temperature servings work beautifully too, offering a different but equally delicious experience.
Conclusion
This blueberry dump cake proves that exceptional desserts don’t require complex techniques or extensive preparation time. We’ve shown you how simple ingredients can transform into a bakery-worthy treat that’ll impress family and friends alike.
The beauty of this recipe lies in its flexibility and forgiving nature. Whether you’re serving it warm with vanilla ice cream or enjoying leftovers the next day our dump cake delivers consistent delicious results every time.
With proper storage techniques and endless variation possibilities you’ll find yourself returning to this recipe whenever you need a reliable crowd-pleaser. It’s the perfect solution for busy bakers who refuse to compromise on taste and quality.
Frequently Asked Questions
What is a blueberry dump cake?
A blueberry dump cake is a simple dessert where ingredients are literally “dumped” into a pan without complex mixing or techniques. It features a layer of seasoned blueberries topped with cake mix and butter, creating a delicious dessert with tender cake topping and juicy blueberry filling that’s perfect for novice bakers.
How long does it take to bake a blueberry dump cake?
Bake the blueberry dump cake at 350°F (175°C) for 45 to 60 minutes until the top is golden brown and bubbly. Use a toothpick test to confirm doneness. Allow the cake to cool for at least 15 minutes before serving to help the filling set properly.
Can I use frozen blueberries instead of fresh?
Yes, you can use frozen blueberries instead of fresh ones. The recipe works equally well with either option. If using frozen blueberries, there’s no need to thaw them first – simply use them straight from the freezer in the same quantity as called for in the recipe.
How should I store leftover blueberry dump cake?
Store leftover blueberry dump cake in an airtight container in the refrigerator for 3-5 days. For longer storage, wrap the completely cooled cake tightly and freeze for up to 3 months. Reheat individual servings in the microwave for 20-30 seconds or warm larger portions in a 350°F oven for 15 minutes.
Can I make blueberry dump cake ahead of time?
Yes, blueberry dump cake can be prepared 3-4 days in advance for optimal freshness. Store the baked cake in the refrigerator and reheat gently before serving. You can also freeze the cake for up to 3 months, making it a convenient make-ahead dessert option.
What equipment do I need to make blueberry dump cake?
You’ll need a 9×13 inch baking dish, two medium mixing bowls, measuring cups and spoons, a whisk, a large spoon or spatula, and a cooling rack. An oven thermometer is optional but helpful for temperature accuracy. These basic tools ensure successful preparation of the dessert.
Can I make variations of the basic blueberry dump cake?
Yes, you can create several variations including mixed berry dump cake (combining different berries), lemon blueberry dump cake (adding lemon zest and extract), or a gluten-free version (using gluten-free cake mix). Each variation maintains the same simple preparation method while offering unique flavor profiles.
What’s the best way to serve blueberry dump cake?
Serve blueberry dump cake warm or at room temperature, cut into 8-12 pieces depending on desired portion size. Classic accompaniments include vanilla ice cream or freshly whipped cream. Garnish with fresh blueberries and a light dusting of powdered sugar for an attractive presentation.