Easy Lemon Blueberry Dump Cake Recipe in the Slow Cooker

This Lemon Blueberry Dump Cake is one of the easiest desserts you can make, yet it tastes like a cozy homemade cobbler with bright citrus flavor and bursts of juicy blueberries in every bite. Made right in the slow cooker, this dessert requires only a handful of ingredients and almost no prep work. The tart lemon cake mix pairs perfectly with sweet wild blueberries, creating a warm, soft, buttery dessert that’s delicious served on its own or topped with vanilla ice cream, whipped cream, or yogurt. Whether you need a simple family dessert, a potluck favorite, or a comforting weekend treat, this dump cake is always a crowd-pleaser.

Ingredients

• 4 cups frozen wild blueberries (about 16 ounces)
• 1 box (15.25 ounces) lemon cake mix, dry and unprepared
• 1/2 cup granulated sugar
• 1/2 cup (1 stick) unsalted butter, melted

Optional Toppings

• Vanilla ice cream
• Whipped cream
• Vanilla yogurt
• Granola

Instructions

1. Lightly coat the inside of a 4- to 6-quart slow cooker with nonstick cooking spray or a thin layer of butter to prevent sticking and make cleanup easier.
2. Pour the frozen wild blueberries directly into the bottom of the slow cooker and spread them into an even layer. Do not thaw the berries first.
3. Sprinkle the granulated sugar evenly over the blueberries to help create a sweet, jammy filling.
4. Evenly sprinkle the dry lemon cake mix over the sugared blueberries. Do not stir, as the layers help create the cobbler-like texture.
5. Slowly drizzle the melted butter over the cake mix, covering as much of the dry surface as possible. A few dry spots are perfectly fine.

6. Cover the slow cooker with the lid and cook:

   • On HIGH for 2 to 2 1/2 hours
   • Or on LOW for 3 1/2 to 4 hours

   The dump cake is ready when the blueberries are bubbling around the edges and the top looks mostly set.

7. Turn off the slow cooker and let the cake rest, covered, for 10 to 15 minutes so it can thicken slightly before serving.
8. Spoon the warm dump cake into bowls and serve with ice cream, whipped cream, or yogurt if desired.
9. Store leftovers in a covered container in the refrigerator for up to 3 days. Reheat gently before serving.

Variations & Tips

• Reduce the blueberries to 3 cups and add 1 cup frozen peaches or strawberries for a milder berry flavor.
• For less sweetness, reduce the sugar to 1/3 cup or 1/4 cup.
• Add 1 teaspoon lemon zest to the cake mix for extra citrus flavor.
• Drizzle 1 tablespoon fresh lemon juice over the berries before adding the sugar for extra brightness.
• Serve with vanilla yogurt and granola for a breakfast-style treat.

Food Safety Notes

• Always use frozen berries straight from the freezer for best texture.
• Refrigerate leftovers promptly after cooling.
• Reheat individual portions until steaming hot before serving again.
• Check the cake mix label carefully for allergens if serving guests with dietary restrictions.

Conclusion

This slow cooker Lemon Blueberry Dump Cake is proof that simple desserts can still be incredibly delicious. With juicy blueberries, buttery lemon cake topping, and effortless preparation, it’s the perfect recipe for busy days, family gatherings, or anytime you want a warm and comforting dessert without much work. Serve it fresh from the slow cooker with your favorite topping and enjoy every sweet, citrusy spoonful.