Why Make This Recipe
Key Lime Cake is a delightful dessert that combines the tangy flavor of key limes with a fluffy cake texture. It’s perfect for any occasion, whether you’re celebrating a birthday, hosting a summer barbecue, or just treating yourself! This cake is simple to make and offers a unique flavor that sets it apart from traditional cakes. Plus, the cream cheese frosting adds a creamy touch that perfectly complements the zesty cake.
How to Make Key Lime Cake
Ingredients:
- 1 cup key lime juice
- 1 1/2 cups all-purpose flour
- 1 cup granulated sugar
- 1/2 cup unsalted butter, softened
- 3 large eggs
- 1 teaspoon baking powder
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
- 1 cup cream cheese
- 1/2 cup powdered sugar
- 1 teaspoon vanilla extract
- Zest of 1 lime
- Buttercream icing (for topping)
Directions:
- Preheat the oven to 350°F (175°C). Grease and flour a cake pan.
- In a large bowl, combine the butter and granulated sugar until light and fluffy.
- Add the eggs one at a time, mixing well after each addition.
- Stir in the key lime juice and lime zest.
- In another bowl, whisk together the flour, baking powder, baking soda, and salt. Gradually add this dry mixture to the wet ingredients, mixing until just combined.
- Pour the batter into the prepared cake pan and smooth the top.
- Bake for 25-30 minutes or until a toothpick inserted into the center comes out clean.
- Allow the cake to cool completely.
- For the frosting, whip the cream cheese with the powdered sugar and vanilla until smooth.
- Spread the cream cheese frosting on top of the cooled cake, then top with buttercream icing if desired.
- Slice and enjoy your delicious key lime cake!

How to Serve Key Lime Cake
Key Lime Cake is best served chilled or at room temperature. You can add a slice of lime on top or sprinkle some zest for garnish. It’s great as a dessert after dinner or for afternoon tea.
How to Store Key Lime Cake
To store your Key Lime Cake, keep it in an airtight container in the refrigerator. It will stay fresh for about 3-5 days. If you want to freeze it, wrap it tightly in plastic wrap and foil. It can be frozen for up to 3 months.
Tips to Make Key Lime Cake
- Use fresh key limes for the best flavor.
- Don’t overmix the batter; mix just until combined.
- Allow the cake to cool completely before adding frosting to prevent it from melting.
- You can adjust the sweetness of the frosting according to your taste.
Variation
For a tropical twist, consider adding shredded coconut to the cake batter or using a lime-flavored buttercream icing instead of regular buttercream.
FAQs
-
Can I use regular limes instead of key limes?
- Yes, regular limes work well if you can’t find key limes. The flavor will be slightly different but still delicious.
-
How can I make this cake gluten-free?
- Substitute the all-purpose flour with a gluten-free flour blend to make it gluten-free.
-
Can I add more lime zest for a stronger flavor?
- Absolutely! Feel free to add more zest if you love the flavor of lime. Just keep in mind it might make the cake a little denser.

Key Lime Cake
Ingredients
Method
- Preheat the oven to 350°F (175°C). Grease and flour a cake pan.
- In a large bowl, combine the softened butter and granulated sugar until light and fluffy.
- Add the eggs one at a time, mixing well after each addition.
- Stir in the key lime juice and lime zest.
- In another bowl, whisk together the flour, baking powder, baking soda, and salt. Gradually add this dry mixture to the wet ingredients, mixing until just combined.
- Pour the batter into the prepared cake pan and smooth the top.
- Bake for 25-30 minutes or until a toothpick inserted into the center comes out clean.
- Allow the cake to cool completely.
- For the frosting, whip the cream cheese with the powdered sugar and vanilla until smooth.
- Spread the cream cheese frosting on top of the cooled cake, then top with buttercream icing if desired.
- Slice and enjoy your delicious key lime cake!