Only the happy adjectives apply to this Key Lime Dump Cake. It’s sweet and zesty, creamy and tart, and topped with a heavenly butter crumble! Plus with just 10 minutes of prep, it’s so easy to make!
Today we’re going to transform your favorite Key Lime Pie Recipe into a tantalizing key lime pie dump cake masterpiece.
So go ahead and pamper your key lime cravings… because with this recipe, creating something dreamy good just became unbelievably easy!
Karla writes: "This was a hit at my family dinner!"
It’s true! This taste bud thrilling key lime delight serves up cozy satisfaction… with just 7 ingredients that are available year round!
Then, you’ll just pop this 9×13 wonder in the oven and wait for the magic to happen!
And trust me, waiting for it to make its grand entrance is the hardest part. That’s because what happens next is the very best part!
With each and every bite, this terrific dump cake will tantalize and tempt you with its perfect combination of flavors. A kiss of sweet matched with a bite of lime tanginess, that’s all topped with an irresistible buttery crumble topping!
Simply dish it up like a key lime cobbler, and you’ve got a most divine dessert.
Could it get any better than this? Well actually, oh yes, yes it can!
Because then you can add some whip cream or a scoop of vanilla ice cream (or both) to send it over the top!
Talk about yum, yum and more yum!!
Believe me, with such irresistible sweet and tangy flavors, it always gets rave reviews. The same kind of amazing flavors you’ll get when you make my easy Lemon Dump Cake Recipe, tropical Pineapple Dump Cake Recipe, or dazzling Raspberry Dump Cake Recipe.
So if you’re interested in becoming an instant kitchen superstar, just start making Easy Cake Dessert Recipes like this. You’ll be on the fast track to fame in no time!
Now here’s what you’ll need to get this dreamy 9×13 key lime pie dump cake started…
Ingredients
It takes just 7 simple ingredients to make the BEST key lime dump cake recipe!
- French Vanilla Cake Mix – Vanilla cake mix can be substituted.
- Key lime Juice – I like to use Nellie & Joe’s Key West Lime Juice.
- Limes – Choose fresh, firm limes for easier zesting.
- Butter – I used salted butter.
- Sweetened Condensed Milk
- Sour Cream – The higher the quality sour cream the better.
- Salt – To enhance the flavors of your lime dump cake.
Like so many of my popular Dump Cake Recipes, you’ll also need a 9×13 casserole dish to prepare this key lime masterpiece.
And trust me, these flavors come together beautifully… to create THE keylime dump cake you’ll want on repeat!
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Pin ItHow to Make Key Lime Dump Cake
It’s actually SO simple to make this key lime dump cake with condensed milk and sour cream!
Here’s what you’ll do…
1. Spray the inside of your 9×13 baking dish with non-stick cooking spray.
2. Mix the ingredients for your key lime pie filling in a large bowl.
3. Then evenly spread out the filling in the bottom of your baking dish.
4. Next, prepare your 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! This really is one of the best Quick and Easy Dessert Recipes you can make!
Scroll down for the printable recipe card with detailed, step-by-step instructions.
How to Serve Lime Dump Cake
This sweet and tart key lime crumble 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!
Storage Tips
After baking this easy key lime dump cake recipe, you can store your leftovers covered in the refrigerator for 2-3 days.
Citrus Dump Cake Variations
Want to change things up? Go for it!
There are so many delicious citrus dump cake variations you can make. A few of my favorites include this Blueberry Lemon Dump Cake that’s made with lemon cake mix and blueberry pie filling, and this Lemon Cobbler that’s made with lemon cake mix, blueberry pie filling and cream cheese. YUM!
The options really are endless! For another tasty treat, be sure to check out these White Chocolate Blueberry Scones.
Reviews
Here’s what your frugal friends are saying about making this easy key lime dump cake with sour cream…
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.”
Sandy writes: “My friends and I loved it!”
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.”
Aimee writes: “Delicious!!!!”
Denise writes: “I chilled overnight & served cold. The zest brightened the dish.”
Sarah writes: “So delicious and super simple!”
Raynette writes: “I crushed up some pretzels and mixed them in with the cake mix crumble. Husband approved.”
Rebecca writes: “My favorite”
Robbie writes: “Came out great! 👍”
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.”
More Easy Dump Cake Recipes
Did You Enjoy This Recipe? ⭐️⭐️⭐️⭐️⭐️ Leave a comment & review below!
Key Lime Dump Cake
Ingredients
- 13.25 oz. Betty Crocker Vanilla Cake Mix
- 8 tbsp. Salted 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
- Gather your ingredients.
- 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, or transfer to refrigerator and serve chilled the next day.
Notes
- How to Serve: 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!
- Storage Tip: Leftovers can be stored covered in the refrigerator for 2-3 days.
- FAQ’s: For answers to Frequently Asked Questions or tips for common substitutions and variations, please refer to the detailed information above this recipe card.
Like this recipe? Rate & comment below!
What is the glaze on top in the last picture?
Hi Andrew ~ what looks like a glaze is actually just the key lime pie filling peeking through. 🙂
Would this work with a yellow cake mix instead?
Hi Kennedy ~ yes… you could substitute a yellow cake mix. Enjoy! 🙂
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…
Aww ~ you’re very welcome! Dump cakes are definitely some of my favorite desserts, too! So easy and so many flavor combinations! 🙂
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!
Hi Cathy ~ you’ll just spoon it out with a large spoon… just like a cobbler. 🙂
Thank you! I can’t wait to try this! 🙂
Do you prepare the cake mix according to the box? or just the dry mix and butter?
Hi Mae ~ no… you’ll just use the dry mix and butter. Hope that helps!
I never knew you could buy key lime pie filling. We like the yogurt, so we’d probably like this too. Thanks for sharing.
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!