If you want a dessert that requires practically zero effort while delivering maximum comfort and flavor, this Lemon Dump Cake is a delicious option. By simply dumping a box of dry lemon cake mix over a layer of sweet frozen fruit and dotting it with butter, the oven transforms the ingredients into a bubbling, fruit-filled cobbler with a crisp, buttery topping.
It’s remarkably quick to prepare in under 5 minutes, uses basic pantry staples, and lets the oven do all the heavy lifting. The recipe is designed around the classic “dump cake” method, creating an effortless, home-style dessert that is sweet, tart, and wonderfully comforting.
Why You’ll Love This Recipe
- Requires only 3 basic ingredients to make
- Incredibly quick 5-minute prep with zero mixing bowls required
- The oven does all the heavy lifting while you relax
- Brilliant contrast of tart frozen fruit and sweet, buttery cake topping
- Uses affordable pantry staples and freezer-friendly fruit
- A guaranteed crowd-pleaser for potlucks, holidays, or weeknight treats
- Naturally adaptable to whatever frozen fruit you have on hand
- Delicious served warm with a scoop of vanilla ice cream
Ingredients
- 1 (16 to 20 oz) bag frozen fruit (such as mixed berries, cherries, peaches, or blueberries)
- 1 box (about 15 oz) yellow or lemon cake mix (dry, straight from the box)
- ½ cup (1 stick) unsalted butter, sliced into thin pats
Optional Additions
- ½ cup granulated sugar sprinkled over the fruit if your frozen fruit is very tart
- 1 teaspoon lemon zest or a splash of lemon juice tossed with the fruit
- ½ cup chopped pecans or walnuts sprinkled on top for a nutty crunch
- A dusting of powdered sugar over the baked cake before serving
Using frozen fruit straight from the bag (no need to thaw!) releases just the right amount of juices as it bakes, combining with the dry cake mix and butter to create a rich, self-saucing cobbler.
Instructions
Step 1: Prep the Oven and Pan Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish with cooking spray or butter.
Step 2: Add the Frozen Fruit Spread your bag of frozen fruit evenly across the bottom of the prepared 9×13-inch baking dish in a single layer. (If your fruit is particularly tart, you can sprinkle a tablespoon or two of sugar directly over the fruit at this stage).
Step 3: Layer the Dry Cake Mix Open the box of dry lemon cake mix and pour it evenly right over the top of the frozen fruit. Use a spatula to gently spread it out, but do not mix it with the fruit.
Step 4: Top with Butter Arrange the thin slices of unsalted butter evenly across the surface of the dry cake mix, covering as much of the surface area as possible so every part gets buttery as it melts.
Step 5: Bake to Golden Perfection Bake uncovered at 350°F for 45 to 50 minutes, or until the fruit is bubbling thickly around the edges and the cake topping is golden brown and crisp.
Step 6: Cool and Serve Remove from the oven and let it cool for 10 to 15 minutes before serving warm.
Tips for the Best Lemon Dump Cake
- Don’t stir the layers The magic of a dump cake relies on leaving the fruit on the bottom, the dry mix in the middle, and the butter on top. Stirring will prevent the crust from forming correctly.
- Cover the dry spots with butter Make sure your butter pats are distributed evenly across the dry cake mix. Any dry powdery patches left unbuttered after baking will remain powdery.
- Use frozen fruit without added syrup Standard unsweetened frozen fruit works best because it lets the bright lemon cake mix provide the ideal level of sweetness without becoming cloying.
- Let it rest before serving Giving the cake 10 to 15 minutes to rest out of the oven allows the bubbling fruit juices to thicken slightly into a rich sauce.
Delicious Variations
- Lemon Blueberry Sunshine Cake Use frozen blueberries as your fruit layer for a classic, gorgeous flavor combination that pairs wonderfully with the lemon cake.
- Nutty Pecan Crust Scatter a half-cup of chopped pecans or slivered almonds over the butter pats right before it goes into the oven for an incredible crunch.
- Triple Berry Lemon Cobbler Use a frozen blend of strawberries, blueberries, raspberries, and blackberries for a vibrant, mixed-berry flavor profile.
What to Serve With Lemon Dump Cake
This warm, fruit-filled cobbler style dessert is wonderful on its own, but pairs exceptionally well with cool accompaniments:
- A generous scoop of vanilla bean ice cream (which melts into the warm fruit sauce)
- A dollop of whipped cream or fresh whipped topping
- A cold glass of milk or a hot cup of coffee
Make-Ahead Instructions
You can assemble the unbaked dump cake (fruit, dry mix, and butter) in your baking dish a few hours ahead of time, cover it tightly, and store it in the refrigerator until you are ready to bake. (Just add 5 extra minutes to the baking time since it starts cold).
Storage
Store leftover dump cake covered tightly in the refrigerator for up to 3 to 4 days. Reheat individual portions in the microwave for 30 to 45 seconds until warm, or warm the entire dish in a 350°F oven for 10 minutes.
