Lemon and blueberry come together in a way that tastes fresh, soft, and just sweet enough after any meal. You layer the fruit, add the cake mix, pour on the butter, and let the oven do the hard part.
Fresh lemon flavor and soft blueberries give this quick, sweet a bright finish that feels right for warm weather, family dinners, or a last-minute blueberry dessert when you need something easy.
If you like simple bakes, browse our dessert recipes or save this beside zesty lemon drizzle with citrus icing for another citrus-forward treat.
Frozen blueberries work well here. The National Center for Home Food Preservation notes that frozen fruit can be used like fresh fruit in pies and upside-down cakes, and Clemson Home & Garden Information Center also notes that frozen blueberries can go into baked recipes without thawing. Keeping them frozen until they go into the pan helps control extra juice.
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Ingredients
This lemon blueberry dump cake uses a short list of easy ingredients. Lemon pie filling brings most of the sweetness and citrus flavor, while the berries keep the dessert fresh and fruity.
| Ingredient | Amount | Why it works |
|---|---|---|
| Lemon pie filling | 1 can, 21 ounces | Gives the base a bright lemon flavor and soft texture |
| Blueberries, fresh or frozen | 4 cups | Adds fruit, color, and a juicy blueberry layer |
| Yellow cake mix | 1 box, 15.25 ounces | Creates the buttery golden topping |
| Unsalted butter, melted | ¾ cup | Helps the dry mix bake evenly and brown well |
| Lemon zest | 1 tablespoon | Sharpens the lemon flavor without extra liquid |
| Vanilla ice cream or whipped cream (optional) | For serving | Makes the warm cake even better |
Instructions
Step 1: Heat the oven and prep the dish
Heat your oven to 350°F or 175°C. Lightly grease a 9x13-inch baking dish so the fruit layer does not stick to the edges.
Step 2: Build the fruit base
Spread the lemon pie filling across the bottom of the dish. Scatter the blueberries over the top, then sprinkle on the lemon zest. If you are using frozen berries, add them straight from the freezer.
Step 3: Add the cake mix
Sprinkle the dry cake mix evenly over the fruit. Do not stir. This is the whole point of a dump dessert recipe. You want the layers to stay stacked so the top bakes into a buttery crust while the fruit turns soft underneath.
Step 4: Add the butter
Pour the melted butter slowly over the cake mix, aiming to cover as much of the surface as you can. If you see a few dry spots, gently spread a little butter over them with the back of a spoon.
Step 5: Bake and rest
Bake for 45 to 50 minutes, or until the top looks golden and the fruit is bubbling around the edges. Let the lemon blueberry dump cake rest for 10 to 15 minutes before serving so the filling thickens a little.
Taste and Texture
This lemon blueberry dump cake lands somewhere between a cobbler and an easy fruit crisp. The bottom stays soft, jammy, and bright with lemon. The top turns buttery and lightly crisp, with tender spots where the fruit bubbles through.
Each spoonful gives you sweet blueberry flavor first, then a clean lemon finish that keeps the dessert from feeling too heavy.
If you enjoy fruit-first cakes, a fresh strawberry layered strawberry delight brings the same homemade comfort in a more classic layer-cake form.
Substitutions
You can change this blueberry dessert without making it complicated. These swaps keep the recipe simple and still work well.
| Use this | Swap with this | What changes |
|---|---|---|
| Lemon pie filling | Blueberry pie filling plus 1 tablespoon lemon juice | Gives a deeper berry flavor with less lemon |
| Yellow cake mix | Lemon cake mix | Makes the citrus flavor stronger |
| Fresh blueberries | Frozen blueberries | Works well and saves prep time |
| Unsalted butter | Salted butter | Adds a slightly saltier finish |
| Vanilla ice cream | Whipped cream | Keeps the topping lighter |
Variations
Lemon blueberry dump cake is easy to adjust when you want a different finish.
- For more crunch, scatter a small handful of sliced almonds on top during the last 10 minutes of baking.
- For a stronger citrus note, use lemon cake mix instead of yellow cake mix.
- For a more mixed summer fruit recipe, replace 1 cup of blueberries with blackberries or raspberries.
- For a richer serving idea, add vanilla ice cream.
- For a lighter topping, use whipped cream.
If you like sliceable cakes with a tighter crumb, a classic butter-rich loaf sweet gives you that style. If bright flavors are more your thing, tropical coconut-lime sweet keeps the same sunny mood with a different fruit profile.
Equipment
You do not need much for this lemon blueberry dump cake.
- 9x13-inch baking dish
- measuring cup
- zester or fine grater
- spoon or small spatula
- oven mitts
Storage
Let the cake cool, then cover the dish or move leftovers into a container. Refrigerate within two hours. The USDA leftovers guide says leftovers keep well in the refrigerator for 3 to 4 days. Warm individual portions in the microwave or reheat larger portions in a low oven until heated through.
Top Tips
- Keep frozen blueberries frozen until baking time so the filling does not get too loose.
- Do not stir the layers. Lemon blueberry dump cake bakes best when the fruit stays on the bottom, and the dry mix stays on top.
- Pour the butter slowly and evenly so the surface turns golden instead of patchy.
- Let the cake rest before serving. Hot fruit filling is very loose right out of the oven.
- Skip extra sugar at first. Lemon pie filling and cake mix already bring plenty of sweetness for most pans.
Frequently Asked Questions
What’s a dump dessert?
Dump dessert is a simple baked dessert where the ingredients are layered into the pan with very little mixing. Fruit or pie filling usually goes on the bottom, dry cake mix goes on top, and butter helps everything bake into a soft fruit base with a crisp topping.
Frozen blueberries ok?
Yes, frozen blueberries work very well in lemon blueberry dump cake. Add them straight from the freezer. Keeping them frozen helps limit bleeding and keeps the fruit layer from turning too watery.
Do I need sugar?
No, not for this version. Lemon pie filling and cake mix already add enough sweetness for most people. If your berries are extra tart and you like sweeter desserts, add 1 to 2 tablespoons of sugar over the fruit before the cake mix.
Best topping?
Vanilla ice cream is the easiest topping because it melts into the warm fruit and buttery crust. Whipped cream also works well. For more lemon flavor, stir a little lemon zest into whipped cream before serving.
Recipe Card
Easy Lemon Blueberry Dump Delight
Ingredients
- 1 can lemon pie filling, 21 ounces
- 4 cups blueberries, fresh or frozen
- 1 box yellow cake mix, 15.25 ounces
- ¾ cup unsalted butter, melted
- 1 tablespoon lemon zest
- vanilla ice cream or whipped cream, optional for serving
Instructions
- Heat the oven to 350°F or 175°C and lightly grease a 9x13-inch baking dish.
- Spread the lemon pie filling in the dish, then add the blueberries and lemon zest.
- Sprinkle the dry cake mix evenly over the fruit. Do not stir.
- Pour the melted butter over the cake mix, covering the surface as evenly as possible.
- Bake for 45 to 50 minutes, until golden on top and bubbling at the edges.
- Rest for 10 to 15 minutes before serving.
Notes
- Frozen blueberries are fine. Use them straight from the freezer.
- Extra sugar is usually not needed in this recipe.
- Serve warm for the best texture.
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