This easy Key Lime Dump Cake Recipe will make you an instant kitchen superstar! It’s so simple to make, and always gets rave reviews! Plus with just 10 minutes of prep, it’s such a cinch to make!
Be sure to also give this authentic Key Lime Pie and lip-smackin Lime Sherbet Punch a try, too!
Key Lime Dump Cake Recipe
Get your Key Lime fill tonight with this sweet and tangy Key Lime Cake Mix Dump Cake Recipe!
Betty writes: “Yum! So easy and so delicious!”
Key Lime Pie is amazing, but guess what… our favorite flavor is also incredible in this 9×13 Key Lime Dump Cake!
Just a few simple ingredients, and you’ve got a ridiculously delicious dessert your family will LOVE!
It’s the perfect combination of flavors… a kiss of sweet matched with a bite of lime tanginess, topped with a buttery crumble topping!
Simply dish it up like a Key Lime Cobbler, and you’ve got a fabulous dessert!
Could it get any better than this? Well actually, oh yes, yes it can!
Then you can add some whip cream or a scoop of vanilla ice cream (or both) to send it over the top! Yes, please!
The best part is… this creamy delicious Key Lime Cake Mix Dump Cake is always in season.
When you can’t make it to the Florida Keys, why not bring them to you?
So are you ready to enjoy your new favorite sweet and tangy treat?
Here’s what you’ll need to get started…
Related: How To Cut Your Grocery Bill In Half (35 easy tips)
Key Lime Dump Cake Ingredients
It takes just a few simple ingredients to make the BEST Key Lime Dump Cake!
Seriously, you won’t believe how simple this key lime dessert is to make!
Here’s what you’ll need before you can get baking your irresistible tangy treat…
It all starts with a box of Vanilla Cake Mix.
Then you’ll also need Butter, Key Lime Juice, Sweetened Condensed Milk, Sour Cream, Limes, and Salt.
The flavors come together beautifully to make THE dessert you’ll want on repeat!
See… I told you it was so EASY!
How to Make Key Lime Dump Cake
It’s actually SO simple to make this sweet and tart treat!
Here’s what you’ll do…
1. Spray the inside of your 9×13 baking dish with non-stick cooking spray.
2. Mix the Key Lime Juice, Sweetened Condensed Milk, Sour Cream, Lime Zest & Salt in large bowl.
3. Evenly spread out the key lime pie filling in the bottom of your baking dish.
4. Combine the cake mix with butter to make a buttery crumble topping, and sprinkle it over the key lime pie filling.
5. Then bake as directed, and until the sides are hot and bubbly.
That’s it. So easy!
Scroll down for the printable recipe card with detailed, step-by-step instructions.
How to Serve Key Lime Dump Cake
This delicious dessert can be served warm, straight from your baking dish!
Simply spoon out portions into small bowls, and top with Whip Cream, Vanilla Ice Cream or Toasted Coconut.
Then… devour & ENJOY!
How to Store Key Lime Dump Cake
After baking, store leftovers covered in the refrigerator.
Citrus Dump Cake Variations
Want to change things up? Go for it!
There are so many delicious citrus dump cake variations you can make. Here are a few of my favorites…
- Crockpot Lemon Dump Cake (made with lemon cake mix and lemon pie filling)
- Blueberry Lemon Dump Cake (made with lemon cake mix and blueberry pie filling)
- Lemon Blueberry Cobbler (made with lemon cake mix, blueberry pie filling and cream cheese)
- Strawberry Lemonade Dump Cake (made with lemon cake mix and strawberry pie filling)
The options really are endless!
Key Lime Dump Cake Reviews
Here’s what your frugal friends are saying about this easy Key Lime Cake Mix Dump Cake…
One reader writes: “Love the sweet and tart.”
Michelle writes: “Very good and rich!”
Karen writes: “Made this last Sunday and it was so good.”
Karla writes: “This was a hit at my family dinner!”
Iris writes: “This is an easy and quick to make recipe. It tastes very good.”
Rena writes: “Yummy… and so simple”
Marcia writes: “Made this for my Mother’s birthday, and it was a big hit. Love how easy it was to make.”
Leanne writes: “Delicious”
Denise writes: “I chilled overnight & served cold. The zest brightened the dish.”
Sarah writes: “So delicious and super simple!”
Kim writes: “Yummy yummy”
Raynette writes: “I crushed up some pretzels and mixed them in with the cake mix crumble. Husband approved.”
Rebecca writes: “My favorite”
Betty writes: “Yum! So easy and so delicious!”
Kelly writes: “I have celiac disease and have made with yellow and white Gluten-Free cake mix.”
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Did You Enjoy This Recipe? ⭐️⭐️⭐️⭐️⭐️ Leave a comment & review below!
Key Lime Dump Cake Recipe
Ingredients
- 13.25 oz. Betty Crocker Vanilla Cake Mix
- 8 tbsp. Butter, melted (1/2 cup or 1 stick)
- 3/4 cup Key Lime Juice
- 28 oz. Sweetened Condensed Milk (two 14 oz. cans)
- 2/3 cup Sour Cream
- 1 tbsp. Grated Lime Zest
- 1/4 tsp. Salt
Instructions
- Preheat oven to 350 degrees.
- Spray inside of glass or ceramic 9×13 Casserole Dish with non-stick cooking spray
- In large mixing bowl, add Key Lime Juice, Sweetened Condensed Milk, Sour Cream, Lime Zest & Salt, and stir until well combined.
- Transfer Key Lime mixture into bottom of baking dish, and spread out evenly.
- In medium mixing bowl, combine dry Cake Mix and melted Butter, and stir until crumbly. (Break up any large chunks into small crumbles with spoon.)
- Sprinkle cake/butter crumble mixture over key lime mixture in baking dish, and spread out evenly.
- Bake for 20 minutes, then allow to cool for at least 20 more minutes on the counter before serving.
- Serve warm with... or transfer to refrigerator and serve chilled the next day.
- Optional: Serve with a scoop of Vanilla Ice Cream, or top with Whip Cream and Toasted Coconut. ENJOY!
- Leftovers can be stored covered in the refrigerator.
Notes
More Lime Recipe Inspiration
Wasn’t that SO easy?
Desserts don’t need to be complicated to be delicious!
Now are you in the mood for more sensational lime treats? I’ve got you covered!
From pie to party punch, there’s something lip-smacking delicious for everyone!
You’ll definitely want to try these, too…
Easy Key Lime Pie Recipe
It’s time to take your tastebuds on a little tropical trip with this Easy Key Lime Pie Recipe!
Lime Sherbet Party Punch
With just 3 ingredients, this Lime Punch will be one of the EASIEST and tastiest party punches you’ll ever make!
Strawberry Limeade Recipe
Did you know it takes just 4 ingredients to make an AMAZING Strawberry Limeade? This big batch recipe will be the hit of your next party!
More Dump Cake and Dessert Inspiration
Craving more easy Dump Cake Recipes and Delicious Dessert Recipes?
Dessert doesn’t need to be complicated! Get inspired with these yummy ideas below…
Strawberry Cheesecake Dump Cake Recipe
Your favorite berry just got a little cheesecake excitement as a best buddy in this delicious dump cake!
Strawberry Dump Cake Recipe
Whether or not you have a secret obsession to Strawberries, you’re about to fall madly in love with this Strawberry Dump Cake Recipe! It’s ridiculously simple and super delicious! Who said desserts has to be complicated?
Crockpot Lemon Dump Cake Recipe
Your tastebuds will squeal with excitement for this easy lip-smackin’ Crockpot Lemon Dump Cake Recipe! So what are we all waiting for… let’s get this Lemon Dump Cake in the Crockpot!! I can almost taste it now!
Easy Black Forest Dump Cake Recipe
It’s time to meet your new favorite desert! This Black Forest Dump Cake Recipe is just 3 ingredients and 110% delicious!
Pineapple Cherry Dump Cake Recipe
Say hello to Summer with this delicious tropical Pineapple Cherry Dump Cake Recipe!
Easy Raspberry Dump Cake Recipe
This Easy Raspberry Dump Cake will remind you of summer raspberry dreams!
Crockpot Blackberry Dump Cake Recipe
This Crockpot Blackberry Dump Cake Recipe is simple, delicious and crazy irresistible!
Crock Pot Lemon Blueberry Dump Cake Recipe
The delicious blend of Lemon and Blueberry is lip-smackin’ good and this dump cake truly couldn’t get much easier! Go grab your Crock Pot and let’s get started!
Pumpkin Spice Dump Cake Recipe
Satisfy those long repressed cravings for pumpkin with this delicious Pumpkin Spice Dump Cake Recipe!
Apple Caramel Dump Cake with 4 Ingredients
Get ready for an outrageously scrumptious dessert when you make this easy Apple Caramel Dump Cake with 4 Ingredients!
Peaches and Cream Cobbler Recipe
This easy Peaches and Cream Cobbler Recipe serves up sweet peach happiness anytime you want.
30 Dump Cake Recipes using Cake Mix
I’ve got a whole list of seriously easy dump cake recipes to share with you! They’re simple to make and SO delicious!
White Chocolate Blueberry Scones
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How To Cut Your Grocery Bill In Half (35 Brilliant Money Saving Tips)
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So have you tried this Key Lime Dump Cake recipe yet?
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Kennedy Poth says
Would this work with a yellow cake mix instead?
Heidi says
Hi Kennedy ~ yes… you could substitute a yellow cake mix. Enjoy! 🙂
Rev Clifford Cheney says
for a old 69 yr old vet these are great………..you can fill them with darn near anything, fresh and from a can. I am disabled and this is so much easier then the long drawn out way to make a cake……………thank you…
Heidi says
Aww ~ you’re very welcome! Dump cakes are definitely some of my favorite desserts, too! So easy and so many flavor combinations! 🙂
Cathy in WV says
How do you serve the cake? Do you turn it out on a plate and cut it or do you spoon it out like you would a cobbler? Thanks!
Heidi says
Hi Cathy ~ you’ll just spoon it out with a large spoon… just like a cobbler. 🙂
Cathy in WV says
Thank you! I can’t wait to try this! 🙂
Mae says
Do you prepare the cake mix according to the box? or just the dry mix and butter?
Heidi says
Hi Mae ~ no… you’ll just use the dry mix and butter. Hope that helps!
Brenda says
I never knew you could buy key lime pie filling. We like the yogurt, so we’d probably like this too. Thanks for sharing.
Heidi says
You’re very welcome, Brenda! You’ll find it on the baking aisle near the other pie fillings. It is SO delicious… just like the yogurt. 😉 ENJOY!