Here’s a delightfully simple dessert that shines when blueberries are in season: the blueberry dump cake. With minimal prep and pantry-friendly ingredients, this cozy, rustic cake gives you a bubbling blueberry filling under a crisp, buttery cakey top — perfect for weeknights, potlucks, or last-minute guests.
Ingredients
– 4 cups fresh or frozen blueberries (do not thaw if frozen)
– 1 cup granulated sugar (adjust to taste)
– 2 tbsp cornstarch (or 3 tbsp for thicker filling)
– 1 tsp lemon zest
– 2 tbsp fresh lemon juice
– 1/4 tsp salt
– 1 box (about 15–16 oz) yellow cake mix
– 1/2 cup (1 stick) unsalted butter, melted
– 1/2 cup sour cream or plain yogurt (optional, for extra moisture)
– 1 tsp vanilla extract
– Optional: 1/2 tsp ground cinnamon or 1/4 tsp nutmeg
Servings and Cooking Time
Servings: 8 (serving size ~1 slice or 1/8 of a 9×13 pan)
Preparation time: 10–15 minutes
Cooking time: 35–45 minutes
Total time: 45–60 minutes
Nutritional Value
The following is approximate nutritional information for one serving (1/8 of a 9×13 cake, ~150–200 g):
– Calories: 320 kcal
– Carbohydrates: 52 g
– Sugars: 35 g
– Protein: 3 g
– Fat: 11 g
– Saturated Fat: 6 g
– Fiber: 2 g
– Sodium: 220 mg
This nutritional estimate is for one person (one serving).
Step-by-Step Cooking Process
– Preheat the oven to 350°F (175°C) and grease a 9×13-inch baking dish lightly.
– In a large bowl, combine blueberries, granulated sugar, cornstarch, lemon zest, lemon juice, and salt; toss gently to coat.
– If using frozen berries, keep them frozen — do not thaw to avoid runny filling.
– Spread the blueberry mixture evenly into the prepared baking dish.
– Sprinkle the dry yellow cake mix evenly over the blueberries, covering the fruit completely.
– In a separate small bowl, stir melted butter with vanilla and sour cream if using; pour evenly over the cake mix.
– For a spottier topping, drizzle butter in lines or small pools so some cake mix remains dry; this creates contrast in texture.
– Optionally sprinkle cinnamon or a little extra sugar over the top for added flavor and sparkle.
– Bake in the preheated oven for 35–45 minutes, until the top is golden brown and juices are bubbling around the edges.
– Remove from oven and let cool at least 15 minutes to set the filling before serving.
– Serve warm with vanilla ice cream or a dollop of whipped cream.
– Store leftovers covered in the refrigerator and reheat individual portions as needed.
Alternative Ingredients
You can swap yellow cake mix for white or spice cake for extra warmth; gluten-free cake mix works too. Use cornstarch alternatives like arrowroot (same amount) to thicken. Replace butter with melted coconut oil for a dairy-free option and use coconut yogurt instead of sour cream.
Serving and Pairings
Serve warm with vanilla ice cream, whipped cream, or crème fraîche. Add a sprinkle of toasted almonds for crunch or a drizzle of lemon glaze. It pairs well with coffee or a dessert wine and makes a comfortable treat alongside breakfast yogurt or a scoop of plain yogurt for brunch.
Storage and Reheating
Cool completely, cover tightly with plastic wrap or an airtight lid, and refrigerate for up to 4 days. Reheat individual portions in the microwave for 30–60 seconds or warm in a 325°F oven for 10–15 minutes. You can freeze whole or portioned (wrapped tightly) for up to 3 months; thaw in the fridge overnight and reheat before serving.
Cooking Mistakes
– Overmixing the blueberries can release excess juice; toss gently.
– Using too much cornstarch can make filling gluey; stick to the recipe amounts.
– Thawing frozen berries first may yield a watery filling.
– Pouring all butter in one spot can cause uneven browning; distribute evenly.
– Baking too long dries out the cakey top — watch for golden color and bubbling edges.
– Skipping lemon reduces brightness; a little acid balances the sweetness.
Helpful Tips
– Use fresh lemon zest for brighter flavor.
– For deeper color, briefly macerate berries with sugar before assembling.
– Add a handful of raspberries or blackberries for mixed-berry flavor.
– Taste the berries first; reduce sugar if fruit is very sweet.
– Let the dessert rest before cutting to prevent runny slices.
FAQs
Can I use frozen blueberries for blueberry dump cake?
Yes — frozen blueberries work great and are convenient. Keep them frozen and do not thaw before assembling; this helps prevent the filling from becoming too watery. Increase baking time slightly if the dish seems very cold coming out of the oven.
How do I make the topping extra crisp?
To boost crispness, drizzle the butter evenly and sprinkle a little extra granulated sugar or coarse sugar on top before baking. Using a portion of melted butter and small pockets of dry cake mix creates varied texture and crunch.
Can I make this cake ahead of time?
You can assemble the cake and refrigerate for a few hours before baking, but if assembled with frozen berries, bake from chilled; if assembled with fresh berries, cover and refrigerate up to 24 hours. For longer storage, bake and then refrigerate or freeze.
Is there a dairy-free version of blueberry dump cake?
Yes — substitute melted coconut oil or a plant-based butter for the butter and use coconut yogurt or dairy-free sour cream. Ensure the cake mix is dairy-free or use a homemade dry cake topping blend to avoid hidden dairy.
How can I prevent a soggy bottom?
Use the correct cornstarch amount to thicken juices and allow the baked cake to rest 15–20 minutes before slicing so the filling sets. A hot baking dish and proper oven temperature also help evaporation and prevent sogginess.
Can I halve the recipe for a smaller crowd?
Absolutely — halve the ingredients and bake in an 8×8-inch pan. Reduce baking time slightly and watch for bubbling edges and a golden top as indicators of doneness.
What can I add to enhance flavor?
Mix in a teaspoon of vanilla, a pinch of cinnamon, or a tablespoon of orange liqueur for depth. Fresh lemon zest and juice brighten the filling; a splash of almond extract complements blueberries nicely.
Conclusion
Blueberry dump cake is a joyful, low-effort dessert that delivers big flavor with minimal fuss. Whether using fresh summer berries or frozen fruit from the pantry, this one-dish cake yields a warm, jammy center and golden top that’s perfect for everyday treats or casual entertaining.
Blueberry Dump Cake
Ingredients
- 4 cups fresh or frozen blueberries do not thaw if using frozen
- 1 cup granulated sugar
- 2 tbsp cornstarch or 3 tbsp for thicker filling
- 1 tsp lemon zest
- 2 tbsp fresh lemon juice
- 1/4 tsp salt
- 1 box 15–16 oz yellow cake mix
- 1/2 cup 1 stick unsalted butter, melted
- 1/2 cup sour cream or plain yogurt optional
- 1 tsp vanilla extract
- Optional: 1/2 tsp ground cinnamon
Instructions
- Preheat oven to 350°F (175°C). Lightly grease a 9x13-inch baking dish.
- In a large bowl, gently toss the blueberries with granulated sugar, cornstarch, lemon zest, lemon juice, and salt until evenly coated.
- If using frozen blueberries, keep them frozen; do not thaw to avoid excess liquid.
- Spread the blueberry mixture evenly into the prepared baking dish.
- Sprinkle the dry yellow cake mix evenly over the blueberries, covering the fruit completely.
- In a small bowl, combine melted butter, vanilla, and sour cream (if using). Stir until smooth.
- Drizzle the butter mixture evenly over the cake mix; distribute so some areas remain dry for varied texture.
- Optionally sprinkle a little cinnamon or coarse sugar over the top for extra flavor and sparkle.
- Bake for 35–45 minutes, until the top is golden and berry juices are bubbling at the edges.
- Remove from oven and let rest 15–20 minutes to allow the filling to set before cutting and serving. Serve warm with vanilla ice cream or whipped cream.
Nutrition
