Blackberry Dump Cake made with just 4 ingredients, a yellow cake mix, butter, & fresh blackberries for a tasty, homestyle cake that is even better topped with ice cream!
If you’ve been scrolling past dump cake recipes thinking they’re all the same, this is the one that changes your mind. With just 4 simple ingredients and fresh blackberries that bake into a jammy, bubbling filling under a golden buttery topping, it delivers big homemade flavor with almost zero effort. It’s the kind of dessert that disappears fast—so keep reading before you miss how easy it really is to make.
Highlights of our Blackberry Dump Cake
- Jammy Blackberry Filling – Fresh blackberries bake down into a sweet-tart, syrupy layer that bubbles up through the topping and tastes like homemade pie filling without the work.
- Buttery Golden Topping – Melted butter soaks into the dry yellow cake mix, creating crisp, golden edges with soft, cake-like pockets throughout every bite.
- Bare-Minimum Effort, Big Reward – Just 4 ingredients and a few minutes of prep (no mixing bowls needed for batter) turns into a warm, crowd-pleasing dessert that’s perfect straight from the oven with ice cream.
Blackberry Dump Cake Ingredients
Blackberries – 4 cups create the juicy, jam-like fruit base that bubbles as it bakes and brings a sweet-tart balance to the dessert.
Granulated sugar – ¼ cup lightly sweetens the berries and helps draw out their natural juices for an extra syrupy filling.
Yellow cake mix – 13.25 oz forms the buttery, golden topping that bakes into a soft, cobbler-like crust.
Melted butter – ¾ cup soaks through the dry cake mix, helping it crisp on top while keeping the center rich and tender.
How long is this Dump Cake good for?
It keeps well in the fridge for about 3–4 days when stored in an airtight container. After that, the topping starts to soften more and the texture gets a bit soggy, even though it’s still safe to eat for a short while longer.
You can also freeze it. For best results, let it cool completely, then wrap tightly or store in a freezer-safe container for up to 2–3 months. When ready to eat, thaw in the fridge overnight and reheat in the oven, microwave, or air fryer until warmed through and bubbly again.
Blackberry Dump Cake
Ingredients
- 4 cups blackberries
- ¼ cup granulated sugar
- 13.25 oz yellow cake mix
- ¾ cup melted butter
Instructions
- Preheat your oven to 350℉. Spray a 9×13 baking dish with non-stick spray.
- Spread the blackberries on the bottom of the baking dish. Sprinkle the sugar on top (if using), then sprinkle the cake mix over that, spreading gently so that everything is even.
- Drizzle the melted butter on top of the cake mix, covering as much of it as you can.
- Bake for about 30-35 minutes, or until golden. Let cool slightly before enjoying with vanilla ice cream!
Notes
Nutrition
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Can I use frozen blackberries instead of fresh?
Yes—frozen blackberries work really well in this recipe. No need to thaw them first; just add them straight into the baking dish.
Why does the top look a little dry or patchy after baking?
That’s completely normal for dump cake. The butter melts down during baking and the fruit juices bubble up from the bottom, so once you scoop it, everything comes together perfectly.
Can I reduce the sugar or leave it out?
Absolutely. If your berries are naturally sweet, you can cut the sugar back or skip it entirely without affecting how the cake bakes.
Enjoy more of our favorite dessert recipes here:
- Strawberry Cheesecake Lush is the kind of no-bake dessert that disappears fast—creamy, dreamy layers piled high over Golden Oreos with juicy strawberries in every bite.
- The ultimate “dump, mix, bake” dessert that somehow tastes like you spent all day on it. With sweet pineapple baked right in, every slice of this Easy Pineapple Bundt Cake is completely irresistible.
- This Apple & Peach Cobbler is the cozy, old-fashioned dessert that tastes like it came straight from a country kitchen. Juicy, spiced fruit bubbles under a buttery brown sugar topping that bakes up golden, crisp, and impossible to resist.
- Chocolate Chip Banana Bars are what happens when banana bread levels up—soft, sweet, and packed with melty chocolate in every bite. They work just as well for breakfast as they do for dessert!
- Bring all that gooey, toasty campfire magic straight to your kitchen with these S’mores made in the Oven. It’s the easiest way to make a crowd-pleasing dessert that’s melty, chocolatey, and ready for dipping all year long.
- Soft, chewy, and bursting with juicy berries that take classic oatmeal cookies to a whole new level. Blackberry Oatmeal Cookies are completely addictive in the best way!
Blackberry Dump Cake is the ultimate low-effort, high-reward dessert—just a few simple ingredients turn into a bubbling, buttery blackberry dream in the oven. It’s warm, gooey, and absolutely next-level once you add a scoop of ice cream on top.
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