Lemon Lime Dump Cake

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Calling all citrus lovers! Tangy key lime pie filling, lemon cake mix and chopped pecans are drizzled with melted butter and baked to golden perfection in this easy, 5-ingredient dessert! Summer calls for Lemon Lime Dump Cake!

With just 5 ingredients, this Lemon Lime Dump Cake could not be easier! Just dump, bake and dig in!

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I did it.

I broke my own “no bake desserts only” rule of Summer for this baby.

Creamy  key lime filling topped with a buttery lemon-y cake layer studded with browned pecans, best served warm but delicious even if it’s room temperature or chilled right out of the fridge.

Lemon Lime Dump Cake

Lemon and lime are the stars of this citrusy, super easy 5 ingredient Lemon Lime Dump Cake!

Have you heard of dump cake before? You basically just dump the ingredients in a baking dish and bake it. So this may not be a no bake dessert, but it is pretty much no effort … that counts, right? 🙂

This classic Cherry Pineapple dump cake has been a potluck go to and get-together must have in our family for years. You will get requests for the recipe at every.single.party. Scout’s honor.

Ready to see how easy this is?

Just spread the pie filling in your baking dish. I added the zest of a lime just to add a little fresh flavor.

Key lime pie filling sprinkled with the zest of a lime is the first layer of this easy Lemon Lime Dump Cake

Then, dump on a lemon cake mix and spread it out over the pie filling.

A lemon cake mix is the next layer of this easy Lemon Lime Dump Cake recipe

Now? Drizzle melted butter. I don’t hate this step 😉

Melted butter and the pie filling provide enough moisture to bake the cake layer of this Lemon Lime Dump Cake

Finally, add a healthy sprinkle of chopped pecans to add some crunch and pop this in the oven! Nuts are optional, but I like the buttery toasted flavor they add. If you don’t like pecans, you can add almonds or walnuts.

Nuts add a great buttery crunch to the top of this easy Lemon Lime Dump Cake

Bake until the cake is cooked through (no liquid batter should remain) and some of the filling is bubbling through.

I like to serve it with a thin wedge of lemon or lime for a big fresh hit of citrus flavor … this tastes as good as it looks!

Calling all citrus lovers! This Lemon Lime Dump Cake is BIG on citrus flavors and so easy to make!

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Lemon Lime Dump Cake

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  • One 16.5 oz. lemon supreme cake mix
  • Two 22 oz. cans Key Lime Creme pie filling
  • 1/2 cup 1 stick butter, melted
  • 1/3 cup chopped pecans
  • Zest of one lime


  1. Preheat oven to 350 degrees F.
  2. Spray a 9 x 13 baking dish with non-stick cooking spray.
  3. Use a spatula to spread the pie filling in an even layer in the bottom of the dish.
  4. Zest one lime over the pie filling.
  5. Sprinkle the dry cake mix evenly over the pie filling.
  6. Drizzle the melted butter over the dry cake mix.
  7. Sprinkle pecans over the top of the cake mix.
  8. Bake for about 40-45 minutes or until the top of the cake is golden brown and there is no dry cake mix remaining.
  9. Allow to cool for 5 minutes and enjoy!

Lemon Lime Dump Cake is a delicious citrusy dessert that will wow your family and friends!

When you break through that buttery lemon cake layer into the creamy, dreamy key lime filling, it is the perfect bite of lemon + lime! A scoop of vanilla ice cream or fresh whipped cream would not be a bad idea, either!

With only 5 ingredients, this Lemon Lime Dump Cake could not be easier to make! You will love the BIG lemon lime flavor!

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Its easy! I will show you how.

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  1. When I cook for church every Wednesday, I am always looking for easy desserts. I cook for ~80 and they all want homemade desserts. I can understand that but when it is just me I need an easy one to make that feeds a lot of people! This is perfect because, you were right, minimal effort. I will take minimal effort over no bake any day of the week and twice on Wednesday!! Thanks for sharing this dessert with Saucy Saturdays and ME!! Hope to see you next week!

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