This quick key lime dump cake is an easy dessert with only 5 simple ingredients and in less than 30 minutes! It's incredibly delicious with its refreshing, tart, and citrusy flavour and buttery crumble topping!
I was skeptical the first time I decided to make this recipe. Something about citrusy flavours like lime baking in the oven has never made sense to me. That's why I make other citrusy desserts no bake most of the time (like this no bake key lime pie and this no bake condensed milk lemon pie).
This key lime dump cake proved me wrong though. It's such a crowd pleaser at any occasion I bring it to! Everyone loves the refreshing and bright lime flavour and the rich and comforting texture it has (similar to a cobbler kinda, just without the fruit!)
Ingredients
- Condensed Milk
- Lime Juice (this recipe uses regular limes because they're generally more accessible at the grocery store, but feel free to use key limes if you have access to them. You can also use bottled lime juice but it likely won't taste as fresh)
- Sour Cream
- Boxed Vanilla Cake Mix (white cake mix and yellow cake mix also work and taste great as an alternative)
- Butter
See the recipe card below for the ingredient measurements.
Step-by-Step Instructions
Step 1 - Prepare: Preheat the oven to 350°F and grease a 9x13 baking dish with cooking spray.
Step 2 - Make the filling: To a mixing bowl, whisk the condensed milk, lime zest, lime juice, and sour cream together and pour into the prepared baking dish.
Step 3 - Making the topping: In a separate bowl, combine the melted butter and cake mix and mix with a fork until a crumbly texture is formed. Sprinkle the crumble over the filling.
Step 4 - Bake: Bake uncovered on the middle rack for 20-22 minutes, until the crumble is slightly golden. Serve warm with vanilla ice cream or room temperature with whipped cream or Cool Whip.
Storage
Store in the fridge covered tightly in plastic wrap for up to one week.
Related Recipes
If you like lime desserts, then you should also try my no bake key lime pie!
Some other easy dump cakes you might like are this chocolate pudding dump cake and this chocolate peanut butter dump cake.
Print📖 Recipe
Quick Key Lime Dump Cake
- Total Time: 30 minutes
- Yield: 8
- Diet: Vegetarian
Description
This quick key lime dump cake is easy to make and incredibly tasty with its refreshing lime flavour!
Ingredients
- Condensed Milk: two cans (14 oz each)
- Limes: 6 (zest ½ of them and juice them all)
- Sour Cream: ½ cup
- Vanilla Cake Mix: one box (15.25 oz)
- Butter: ½ cup, melted
Instructions
- Prepare: Preheat the oven to 350°F and grease a 9x13 baking dish with cooking spray.
- Make the filling: To a mixing bowl, whisk the condensed milk, lime zest, lime juice, and sour cream together and pour into the prepared baking dish.
- Making the topping: In a separate bowl, combine the melted butter and cake mix and mix with a fork until a crumbly texture is formed. Sprinkle the crumble over the filling.
- Bake: Bake uncovered on the middle rack for 20-22 minutes, until the crumble is slightly golden. Serve warm with vanilla ice cream or room temperature with whipped cream or Cool Whip.
Notes
Another option for the filling is to use key lime pie instant pudding.
Nutrition facts are for informational purposes only. We are not responsible for any errors. We have tested the recipe for accuracy, but your results may vary. Please note that this is not medical or nutrition advice. Seek advice from a licensed professional if you need advice. We are not liable for any damages caused by your use of this content.
- Prep Time: 10 minutes
- Cook Time: 20 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
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