If you’re looking for a dessert that captures the essence of summer with minimal effort, look no further than this delightful Blueberry Lemon Dump Cake. With its vibrant colors and refreshing flavors, it’s the perfect treat for any occasion. Imagine the tartness of fresh blueberries mingling with the bright zest of lemons, all topped with a buttery, moist cake. This recipe is not only simple to make but also a crowd-pleaser that will have everyone asking for seconds. So, let’s dive into this easy and delectable dessert!
Why It Deserves a Spot

Blueberry Lemon Dump Cake deserves a spot in your dessert repertoire for several reasons. First, the flavor combination of blueberries and lemon is simply irresistible; the tartness of the berries complements the bright citrus notes beautifully. Second, this recipe is incredibly easy to make. Just dump the ingredients into a baking dish, and let the oven do the rest! It’s the kind of recipe that allows you to spend more time enjoying your company and less time slaving away in the kitchen. Lastly, this dessert can be served warm with a scoop of ice cream or chilled, making it versatile for any season.
Ingredients at a Glance
- 6 cups fresh blueberries
- 2/3 cup sugar
- 1 tablespoon cornstarch
- 2 tablespoons lemon zest (divided)
- 1/2 cup butter (plus 1-2 tablespoons more if needed)
- 15.25 oz. cake mix (I used Betty Crocker Super Moist Yellow)
Equipment & Tools
- 9×13-inch baking dish – The perfect size for this dump cake.
- Mixing bowl – For combining the sugar, cornstarch, and lemon zest.
- Baking spatula – To evenly spread the cake mix.
- Measuring cups and spoons – For accurate ingredient measurements.
- Oven mitts – Safety first when handling hot dishes!
Blueberry Lemon Dump Cake, Made Easy

Step 1: Prepare the Blueberries
Start by preheating your oven to 350°F (175°C). In a mixing bowl, combine the fresh blueberries, sugar, cornstarch, and 1 tablespoon of lemon zest. Gently toss until the blueberries are well-coated. This mixture will create a delicious base that will burst with flavor as it bakes.
Step 2: Layer the Blueberries
Pour the blueberry mixture into the bottom of a greased 9×13-inch baking dish. Make sure to spread it evenly across the bottom to ensure every bite is filled with those luscious blueberries.
Step 3: Add the Cake Mix
Next, sprinkle the entire package of cake mix evenly over the blueberry layer. Don’t worry about mixing it in; this is a dump cake, after all! The cake mix will rise and form a topping as it bakes.
Step 4: Melt the Butter
Melt the 1/2 cup of butter in a microwave-safe bowl. If you prefer a slightly richer flavor, feel free to add an additional tablespoon or two of butter. Once melted, drizzle the butter evenly over the cake mix. This step is crucial for achieving that golden, crispy topping.
Step 5: Bake to Perfection
Place the baking dish in the preheated oven and bake for about 45-55 minutes or until the top is golden brown and bubbly. You’ll know it’s done when the edges are crisp and the cake mix has risen.
Step 6: Cool and Serve
Once baked, remove the Blueberry Lemon Dump Cake from the oven and let it cool for about 10-15 minutes. This cooling period allows the flavors to meld beautifully. Serve warm with a scoop of vanilla ice cream or a dollop of whipped cream for an extra special treat!
Seasonal Adaptations

- Spring/Summer: Use fresh blueberries and lemons for a vibrant taste.
- Fall: Substitute blueberries with apples and add a teaspoon of cinnamon for a seasonal twist.
- Winter: Use frozen blueberries for a cozy dessert during the colder months.
- Year-Round: Incorporate other berries like raspberries or strawberries for a mixed berry dump cake.
Author’s Commentary
This Blueberry Lemon Dump Cake is a testament to the beauty of simplicity in baking. I love how each ingredient shines through, and the ease of preparation makes it a go-to recipe for gatherings. It’s perfect for potlucks, picnics, or simply enjoying at home with loved ones. The combination of flavors transports me to a sunny day, and the smell wafting through the kitchen while it bakes is simply divine. Trust me, once you make this cake, it will quickly become a favorite in your household!
Keep It Fresh: Storage Guide
To store your Blueberry Lemon Dump Cake, allow it to cool completely and then cover it with plastic wrap or aluminum foil. It can be kept at room temperature for up to 2 days or in the refrigerator for up to a week. If you prefer to keep it longer, freeze the cake by wrapping it tightly in plastic wrap followed by aluminum foil. It can be frozen for up to 3 months. When ready to enjoy, simply thaw it in the refrigerator overnight and reheat in the oven for a few minutes to restore its delicious texture.
Your Questions, Answered
Can I use frozen blueberries instead of fresh?
Absolutely! Frozen blueberries work wonderfully in this recipe. Just make sure to toss them with the sugar and cornstarch without thawing to prevent excess moisture from forming.
What can I substitute for the yellow cake mix?
If you want a healthier twist, you can use a gluten-free cake mix or even a homemade cake mix. Just ensure that the consistency remains similar for the best results.
Can I make this cake in advance?
Yes, you can prepare the blueberry layer and sprinkle the cake mix on top, then cover it and refrigerate for a few hours before baking. Just add a few extra minutes to the baking time if you bake it straight from the fridge.
How do I know when the cake is done baking?
The cake is done when the top is golden brown and bubbly, and a toothpick inserted in the center comes out clean or with a few moist crumbs.
Next Up in Your Queue
- Lemon Blueberry Muffins – Start your mornings with these delicious muffins!
- Classic Yellow Cake with Chocolate Frosting – A timeless favorite that never disappoints.
- Easy Berry Crumble – A simple dessert that’s bursting with berry goodness.
- Lemon Poppy Seed Bread – A delightful twist on a classic quick bread.
Before You Go
With just a handful of ingredients and minimal effort, this Blueberry Lemon Dump Cake is the perfect dessert to whip up for any occasion. Whether you’re celebrating a special moment or simply treating yourself, this cake promises to satisfy your sweet tooth. So grab your blueberries and get baking! You’ll be glad you did. Enjoy every bite of this scrumptious creation, and don’t forget to share with friends and family. Happy baking!

Blueberry Lemon Dump Cake
Ingredients
- 6 cups fresh blueberries
- 2/3 cup sugar
- 1 tablespoon cornstarch
- 2 tablespoons lemon zest divided
- 1/2 cup butter (plus 1-2 tablespoons more if needed)
- 15.25 oz. cake mix (I used Betty Crocker Super Moist Yellow)
Instructions
- Step 1: Prepare the Blueberries. Preheat your oven to 350°F (175°C). In a mixing bowl, combine the fresh blueberries, sugar, cornstarch, and 1 tablespoon of lemon zest. Gently toss until the blueberries are well-coated.
- Step 2: Layer the Blueberries. Pour the blueberry mixture into the bottom of a greased 9x13-inch baking dish, spreading it evenly.
- Step 3: Add the Cake Mix. Sprinkle the cake mix evenly over the blueberry layer without mixing it in.
- Step 4: Melt the Butter. Melt the 1/2 cup of butter and drizzle it evenly over the cake mix.
- Step 5: Bake to Perfection. Bake for about 45-55 minutes or until the top is golden brown and bubbly.
- Step 6: Cool and Serve. Let it cool for 10-15 minutes, then serve warm with ice cream or whipped cream!
Equipment
- 9x13 inch Baking Dish
- Mixing Bowl
- Baking spatula
- Measuring cups and spoons
- Oven mitts
Notes
- For a richer flavor, add an extra tablespoon of butter.
- This cake can be served warm or chilled, perfect for any season.
- Store leftovers covered at room temperature for up to 2 days or in the refrigerator for up to a week.
