
Bright and buttery with the perfect hit of tang, lemon dump cake is my secret weapon for effortless dessert days. All it takes is a handful of pantry ingredients, a single baking dish, and the patience to let warm citrusy goodness fill your kitchen. This is the kind of dessert I throw together when surprise guests drop by or when my sweet tooth just can’t wait.
The first time I tried this, I was amazed something so simple could get rave reviews at family dinner. Now my friends request I bring this to every potluck.
Ingredients
- Lemon cake mix: gives you that tart bakery flavor with soft crumb
- Lemon pie filling: delivers luscious texture and bold citrus punch
- Unsalted butter melted: coats the cake topping for a crisp golden finish
- Powdered sugar optional: adds an elegant finishing touch and a hint of extra sweetness
I always check for a fresh lemony scent in the pie filling and pick a cake mix brand that uses real lemon oil when possible for the brightest flavor.
Step-by-Step Instructions
- Prepare the Baking Dish:
- Grease your nine by thirteen inch baking dish well with butter or nonstick spray. This keeps the cake from sticking and helps the edges form a golden crust.
- Layer the Pie Filling:
- Spread the lemon pie filling evenly in the bottom of the dish. Level it gently so every bite gets a good amount of filling.
- Add the Cake Mix:
- Sprinkle the dry cake mix evenly right over the pie filling. Take your time to spread it gently corner to corner so the topping bakes nice and even.
- Drizzle with Butter:
- Slowly pour the melted butter over the cake mix. Try to coat as much of the surface as you can. This is the secret to golden crunchy edges and buttery flavor throughout.
- Bake to Perfection:
- Slide your dish into the preheated oven. Bake for thirty five to forty minutes until the top is golden brown and bubbling at the sides. The aroma is incredible.
- Cool and Serve:
- Let the cake cool for a few minutes so it sets up before scooping. Add a dusting of powdered sugar on top if you like a little extra sweetness.

My favorite part is getting a big spoonful with crispy sweet topping and gooey lemony ribbons in every bite. My grandmother always raved how this tasted just like her favorite bakery’s pudding cakes but so much easier.
Storage Tips
Cover leftovers tightly and refrigerate for up to four days. I find the flavors deepen as it sits and a quick zap in the microwave brings back that just-baked feel. You can also freeze individual portions tightly wrapped to satisfy last minute cravings anytime.
Ingredient Substitutions
Try swapping the lemon cake mix for vanilla or even strawberry if you want a twist on the citrus flavor. If you cannot find lemon pie filling look for canned lemon curd or even make a quick homemade lemon filling using fresh lemons and sugar. Dairy free butter substitutes work well if needed.
Serving Suggestions
This cake is lovely served warm with a scoop of vanilla ice cream or a dollop of lightly sweetened whipped cream. Sprinkle chopped toasted almonds or fresh berries on top if you love extra texture and color. It also makes a perfect finish to brunch or summer picnics.

Cultural Context
The term dump cake was coined in midcentury America when convenience foods gained popularity. These cakes became family favorites because you could simply dump the ingredients and bake without fuss. Lemon versions always stood out in my family for their sunny flavor and freshness even in the middle of winter.
Recipe FAQs
- → How do I know when the dessert is done baking?
The top should be golden brown and the edges bubbling. A toothpick inserted should come out mostly clean, but a little gooeyness is normal due to the pie filling layer.
- → Can I use different pie fillings?
Yes! While lemon adds a bright, tangy flavor, you can try blueberry, cherry, or apple pie filling for fun twists.
- → Does the butter need to be melted?
Melted butter helps evenly moisten the cake mix, promoting a uniform, tender crumb and golden top.
- → How should I serve it?
Let it cool slightly, then serve warm. For extra indulgence, add whipped cream, vanilla ice cream, or a light dusting of powdered sugar.
- → Can leftovers be stored?
Yes, cover and refrigerate for up to 3 days. Reheat individual portions in the microwave for the best texture.
- → Should the cake mix be prepared before adding?
No, simply sprinkle the dry cake mix directly over the pie filling as directed in the instructions.