Key Lime Cake with Key Lime Cream Cheese Frosting is a delightful dessert that balances sweetness with a zesty kick. This cake is perfect for any occasion, whether it’s a birthday celebration or a summer picnic. With its light and fluffy texture, paired with the tangy cream cheese frosting, this treat stands out as a crowd-pleaser. The refreshing flavor of key lime makes it an unforgettable choice for those looking to impress their guests.
Why You’ll Love This Recipe
- Refreshing Flavor: The combination of key lime juice and zest offers a bright and tangy flavor that’s refreshing.
- Easy to Make: With straightforward steps, even novice bakers can create this delicious cake without stress.
- Versatile Dessert: Perfect for celebrations, gatherings, or simply as a delightful treat at home.
- Beautiful Presentation: The vibrant color and decorative frosting make it visually appealing for any table setting.
- Customizable: Adjust the sweetness or add decorations like lime slices or crushed graham crackers to suit your taste.
Tools and Preparation
Before you start baking, gather your tools. Having everything ready will streamline the process and ensure you don’t miss any steps.
Essential Tools and Equipment
- Stand mixer or hand mixer
- Mixing bowls
- Measuring cups and spoons
- Rubber spatula
- Two 9-inch round cake pans
- Cooling racks
Importance of Each Tool
- Stand mixer or hand mixer: Ideal for achieving light and fluffy batter by thoroughly creaming butter and sugar.
- Mixing bowls: Essential for keeping your ingredients organized while mixing them separately before combining.
- Rubber spatula: Helps to scrape down the sides of the bowl, ensuring all ingredients are well mixed.

Ingredients
For the Cake:
- 1 cup (2 sticks) unsalted butter, softened
- 2 cups granulated sugar
- 4 large eggs
- 2 cups all-purpose flour
- 1 tbsp baking powder
- 1 tsp salt
- 1 cup whole milk (room temperature)
- 1/2 cup fresh key lime juice (or bottled key lime juice)
- 1 tbsp key lime zest (or regular lime zest)
- 1 tsp vanilla extract
- Optional: a few drops of green food coloring for a lime hue
For the Key Lime Cream Cheese Frosting:
- 8 oz cream cheese, softened
- 1/2 cup (1 stick) unsalted butter, softened
- 4 cups powdered sugar, sifted
- 2-3 tbsp key lime juice
- 1 tsp key lime zest
- Pinch of salt
- Optional: a drop of green food coloring for tint
How to Make Key Lime Cake with Key Lime Cream Cheese Frosting
Step 1: Preheat the Oven
Preheat your oven to 350F (175C). Grease and flour two 9-inch round cake pans or line them with parchment paper to prevent sticking.
Step 2: Make the Cake Batter
- In a large bowl, cream together the unsalted butter and granulated sugar until light and fluffy, about 3-4 minutes.
- Add eggs one at a time, mixing well after each addition.
- In another bowl, whisk together the all-purpose flour, baking powder, and salt.
- In a measuring cup, combine whole milk, fresh key lime juice, key lime zest, and vanilla extract.
- Gradually add the dry ingredients to the butter mixture alternately with the milk mixture, starting and ending with dry ingredients. Mix just until combined.
- If desired, stir in a few drops of green food coloring.
Step 3: Bake
- Divide the batter evenly between the prepared pans.
- Bake for 28-32 minutes or until a toothpick inserted into the center comes out clean.
- Allow cooling in pans for 10 minutes before turning out onto wire racks to cool completely.
Step 4: Make the Frosting
- Beat together cream cheese and butter in a mixing bowl until smooth and fluffy.
- Gradually add sifted powdered sugar while mixing well.
- Mix in key lime juice, zest, and a pinch of salt until fluffy and spreadable. Adjust consistency with more juice for tanginess or more sugar if it needs thickening.
Step 5: Assemble the Cake
- Place one layer of cake on a serving plate and spread frosting on top.
- Add the second layer on top; frost both the top and sides generously.
- Garnish with additional lime zest, slices of lime, or crushed graham crackers for an extra touch reminiscent of key lime pie.
Enjoy your homemade Key Lime Cake with Key Lime Cream Cheese Frosting at your next gathering!
How to Serve Key Lime Cake with Key Lime Cream Cheese Frosting
Serving your Key Lime Cake with Key Lime Cream Cheese Frosting can elevate any occasion. This cake pairs beautifully with a variety of accompaniments, enhancing its refreshing flavors. Here are some delightful ways to serve it.
With Fresh Berries
- Serve slices of the cake alongside fresh strawberries, blueberries, or raspberries for a burst of color and natural sweetness.
Topped with Whipped Cream
- Add a dollop of homemade whipped cream on top of each slice for an extra creamy texture that complements the tangy frosting.
Accompanied by Coconut Flakes
- Sprinkle toasted coconut flakes over the frosting for a tropical touch that enhances the overall flavor profile.
Garnished with Lime Slices
- Decorate each slice with thin lime slices for a zesty look that also emphasizes the key lime flavor in the cake.
Served with Ice Cream
- Pair a slice of cake with a scoop of vanilla or coconut ice cream, creating a delightful contrast between warm and cold textures.
How to Perfect Key Lime Cake with Key Lime Cream Cheese Frosting
Perfecting your Key Lime Cake is all about attention to detail and the right techniques. Here are some helpful tips to ensure your cake turns out beautifully every time.
-
Choose Fresh Limes: Use fresh key limes for juice and zest when possible; they provide a more vibrant flavor than bottled alternatives.
-
Room Temperature Ingredients: Make sure your butter, eggs, and milk are at room temperature for better mixing and a lighter cake texture.
-
Don’t Overmix: After combining wet and dry ingredients, mix just until incorporated to prevent a dense cake; overmixing can lead to tough results.
-
Use Proper Baking Pans: Ensure your pans are greased well or lined with parchment paper to prevent sticking and achieve smooth edges on your layers.
Best Side Dishes for Key Lime Cake with Key Lime Cream Cheese Frosting
To complement your Key Lime Cake, consider serving it alongside these delicious side dishes. Each one adds its own unique flavor while enhancing the overall experience of enjoying this delightful dessert.
- Fruit Salad: A refreshing mix of seasonal fruits adds brightness and balances the richness of the cake.
- Coconut Rice: Fluffy coconut rice brings a subtle sweetness that pairs nicely with the tartness of key lime.
- Mixed Green Salad: A light salad with citrus vinaigrette provides a refreshing contrast and cleanses the palate.
- Grilled Pineapple: Sweet grilled pineapple slices can enhance tropical flavors, making them an excellent side.
- Cheese Platter: A selection of mild cheeses offers richness that complements the tangy frosting without overpowering it.
- Lemon Sorbet: A scoop of lemon sorbet serves as a refreshing palate cleanser before or after indulging in the cake.
Common Mistakes to Avoid
Baking a Key Lime Cake with Key Lime Cream Cheese Frosting can be tricky if you’re not careful. Here are common mistakes to watch out for:
- Not measuring ingredients accurately – Use precise measurements for flour, sugar, and liquids. This ensures the right texture and flavor.
- Skipping the room temperature step – Ingredients like butter and eggs should be at room temperature for proper mixing. Cold ingredients can cause a dense cake.
- Overmixing the batter – Mix until just combined to avoid a tough cake. Overmixing develops gluten, leading to a dense texture.
- Ignoring oven temperature – Always preheat your oven correctly. An inaccurate temperature can result in uneven baking or a sunken cake.
- Not letting the cake cool completely – Allow the cake layers to cool fully before frosting. This prevents the frosting from melting and sliding off.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container to keep it fresh for up to 5 days.
- Place parchment paper between layers if stacked to prevent sticking.
Freezing Key Lime Cake with Key Lime Cream Cheese Frosting
- Wrap individual slices in plastic wrap, then place in a freezer-safe container.
- The cake can be frozen for up to 3 months.
Reheating Key Lime Cake with Key Lime Cream Cheese Frosting
- Oven – Preheat to 350°F (175°C). Warm for about 10 minutes until slightly heated through.
- Microwave – Heat on medium power for 15-20 seconds per slice until warm.
- Stovetop – Use a skillet over low heat, cover, and warm slices for a few minutes.
Frequently Asked Questions
Here are some frequently asked questions about making Key Lime Cake with Key Lime Cream Cheese Frosting:
Can I use regular lime juice instead of key lime juice?
Yes, while key lime juice offers a unique flavor, regular lime juice works well as a substitute.
How do I make my frosting thicker?
To thicken your frosting, gradually add more powdered sugar until you reach your desired consistency.
Can I make this cake ahead of time?
Absolutely! You can bake the cake layers ahead of time and store them in the fridge or freezer before frosting.
What can I use instead of cream cheese for the frosting?
You can use mascarpone cheese or a vegan cream cheese alternative if you want a different flavor profile.
Final Thoughts
This Key Lime Cake with Key Lime Cream Cheese Frosting is not only delicious but also versatile. You can customize it by adding different zests or toppings like fresh fruit or nuts. Whether it’s for a special occasion or just because, this cake will surely impress your friends and family. Give it a try!

Key Lime Cake with Key Lime Cream Cheese Frosting
- Total Time: 50 minutes
- Yield: Serves approximately 12 1x
Description
Indulge in the delightful freshness of our Key Lime Cake with Key Lime Cream Cheese Frosting. This vibrant dessert combines the zesty goodness of key limes with a rich cream cheese frosting, creating a perfect balance of sweet and tangy flavors. Ideal for any occasion—be it a summer picnic, birthday celebration, or simply a treat for yourself—this cake is light, fluffy, and sure to impress your guests. With easy preparation steps and customizable options, you’ll find this recipe to be not only delicious but also fun to make!
Ingredients
- 1 cup unsalted butter, softened
- 2 cups granulated sugar
- 4 large eggs
- 2 cups all-purpose flour
- 1 tbsp baking powder
- 1 tsp salt
- 1 cup whole milk
- 1/2 cup fresh key lime juice
- 1 tbsp key lime zest (or regular lime zest)
- 1 tsp vanilla extract
- Optional: a few drops of green food coloring for a lime hue
- 8 oz cream cheese, softened
- 1/2 cup unsalted butter, softened
- 4 cups powdered sugar, sifted
- 2–3 tbsp key lime juice
- 1 tsp key lime zest
- Pinch of salt
- Optional: a drop of green food coloring for tint
Instructions
- Preheat the oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
- In a large bowl, cream together the unsalted butter and granulated sugar until light and fluffy, about 3-4 minutes. Add eggs one at a time, mixing well after each addition.
- In another bowl, whisk together the all-purpose flour, baking powder, and salt.
- In a measuring cup, combine whole milk, fresh key lime juice, key lime zest, and vanilla extract.
- Gradually add the dry ingredients to the butter mixture alternately with the milk mixture, starting and ending with dry ingredients. Mix just until combined. If desired, stir in a few drops of green food coloring.
- Divide the batter evenly between the prepared pans. Bake for 28-32 minutes or until a toothpick inserted into the center comes out clean.
- Allow cooling in pans for 10 minutes before turning out onto wire racks to cool completely.
- For the frosting, beat together cream cheese and butter in a mixing bowl until smooth and fluffy. Gradually add sifted powdered sugar while mixing well. Mix in key lime juice, zest, and a pinch of salt until fluffy and spreadable.
- To assemble, place one layer of cake on a serving plate and spread frosting on top. Add the second layer on top; frost both the top and sides generously. Garnish with additional lime zest, slices of lime, or crushed graham crackers.
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice (85g)
- Calories: 320
- Sugar: 28g
- Sodium: 180mg
- Fat: 15g
- Saturated Fat: 9g
- Unsaturated Fat: 5g
- Trans Fat: 0g
- Carbohydrates: 43g
- Fiber: 0g
- Protein: 3g
- Cholesterol: 60mg