If you love desserts that strike the perfect balance between sweet and tangy, this Key Lime Cake with Key Lime Cream Cheese Frosting is one you will want to bake again and again. It captures the vibrant citrus punch of key limes in a soft, tender cake layered with rich, creamy frosting. The result is refreshing yet indulgent, making it ideal for spring gatherings, summer celebrations, or whenever you crave something bright and uplifting.
The first time I made this cake, I was surprised by how aromatic the batter became once the lime zest was added. The fragrance alone hinted at how flavorful it would be. I also tested it with a combination of fresh key lime juice and a small amount of regular lime juice when key limes were limited, and it still delivered that signature tart flavor beautifully.
This cake is moist, balanced, and layered with creamy citrus frosting that complements every bite.
Why You’ll Love This Recipe
This cake offers a beautiful contrast between soft crumb and tangy frosting. It is not overly sweet, allowing the fresh citrus flavor to shine. The cream cheese frosting adds richness while the lime keeps it light and refreshing. It is perfect for birthdays, brunches, or even as a sophisticated afternoon dessert.
The recipe is approachable, and the ingredients are simple pantry staples enhanced by fresh citrus. It can be baked as a layer cake, sheet cake, or even cupcakes.
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Key Lime Cake with Key Lime Cream Cheese Frosting: A Bright and Tangy Showstopper
- Total Time: 50 minutes
- Yield: 12 servings
- Diet: Vegetarian
Description
A moist and tangy key lime cake bursting with fresh citrus flavor, layered and topped with a rich, creamy key lime cream cheese frosting for the perfect balance of sweet and tart.
Ingredients
- 2 1/2 cups all-purpose flour
- 2 teaspoons baking powder
- 1/2 teaspoon baking soda
- 1/2 teaspoon salt
- 1 cup unsalted butter, softened
- 1 3/4 cups granulated sugar
- 4 large eggs
- 1 tablespoon key lime zest
- 1/2 cup fresh key lime juice
- 1 cup buttermilk
- 1 teaspoon vanilla extract
- For the Frosting:
- 8 oz cream cheese, softened
- 1/2 cup unsalted butter, softened
- 4 cups powdered sugar
- 2 tablespoons key lime juice
- 1 teaspoon key lime zest
Instructions
- Preheat oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
- In a bowl, whisk together flour, baking powder, baking soda, and salt.
- In a large mixing bowl, beat butter and sugar until light and fluffy.
- Add eggs one at a time, mixing well after each addition. Stir in key lime zest and vanilla extract.
- Alternate adding dry ingredients and buttermilk to the batter, beginning and ending with dry ingredients. Mix in key lime juice until just combined.
- Divide batter evenly between prepared pans and bake for 25–30 minutes, or until a toothpick inserted in the center comes out clean.
- Cool cakes in pans for 10 minutes, then transfer to wire racks to cool completely.
- For the frosting, beat cream cheese and butter until smooth and creamy.
- Gradually add powdered sugar, beating until fluffy. Mix in key lime juice and zest.
- Frost the cooled cake layers and spread frosting over the top and sides. Chill for 30 minutes before serving for best results.
Notes
- Use fresh key lime juice for the most vibrant flavor.
- If key limes are unavailable, substitute regular lime juice.
- Chill the cake before slicing for cleaner cuts.
- Store in the refrigerator for up to 4 days.
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
(Tip: You can find the complete list of ingredients and their measurements in the recipe card below.)
All-purpose flour
Provides the structure for the cake. Properly measuring the flour ensures a soft and tender crumb.
Baking powder
Acts as the primary leavening agent, helping the cake rise evenly.
Salt
Balances sweetness and enhances the citrus flavor.
Unsalted butter
Adds richness and moisture. Using room temperature butter ensures proper creaming with sugar.
Granulated sugar
Sweetens the cake and helps create a light, fluffy texture when creamed with butter.
Eggs
Provide structure and stability. They also contribute to the cake’s tender texture.
Key lime juice
The star ingredient, delivering a distinct tart and aromatic citrus flavor.
Key lime zest
Adds concentrated citrus oils that intensify the lime flavor throughout the cake.
Buttermilk
Creates a moist crumb and slight tang that complements the lime beautifully.
Vanilla extract
Enhances overall flavor without overpowering the citrus.
For the frosting:
Cream cheese
Forms the creamy base of the frosting, adding tang and richness.
Unsalted butter
Creates a smooth, spreadable consistency when whipped with cream cheese.
Powdered sugar
Sweetens and thickens the frosting to the perfect consistency.
Key lime juice
Adds brightness and balances the sweetness of the frosting.
Key lime zest
Infuses the frosting with fresh citrus aroma and flavor.
Directions
Preheat your oven to 350°F (175°C). Grease and line two 8-inch round cake pans with parchment paper.
In a bowl, whisk together the flour, baking powder, and salt. Set aside.
In a large mixing bowl, cream the butter and granulated sugar until light and fluffy. This step is essential for incorporating air into the batter. Add the eggs one at a time, mixing well after each addition. Stir in the key lime zest and vanilla extract.
In a small bowl, combine key lime juice and buttermilk. Alternately add the dry ingredients and the buttermilk mixture to the butter mixture, beginning and ending with the dry ingredients. Mix just until combined.
Divide the batter evenly between prepared pans and smooth the tops. Bake for 25 to 30 minutes, or until a toothpick inserted in the center comes out clean. Allow cakes to cool completely before frosting.
For the frosting, beat the cream cheese and butter until smooth and creamy. Gradually add powdered sugar, mixing until light and fluffy. Blend in key lime juice and zest until fully incorporated.
Place one cake layer on a serving plate, spread frosting evenly on top, then add the second layer. Frost the top and sides. Chill briefly before slicing for clean cuts.
Must-Have Tools to Get Rolling
Must-Have Tools to Get Rolling
Here’s what you’ll want to have on hand:
Silicone Spatula – Durable, heat-resistant silicone spatula perfect for mixing, scraping, and spreading. Gentle on non-stick cookware and easy to clean.
Large pot – You’ll need this to boil the whole cabbage head and soften the leaves.
large bowl –Spacious, durable large bowl ideal for mixing, serving, or food preparation. Made from sturdy material and easy to clean.
Sharp knife – For coring the cabbage and slicing out the thick stem in each leaf. A paring knife works best.
Mixing bowl – A big bowl makes it easier to combine your meat and rice filling evenly.
Cutting board – For prepping cabbage leaves and rolling them like a pro.
Full-Size Blender – is a powerful kitchen appliance for making smoothies, soups, and sauces in large batches.
3-in-1 Air Fryer – This versatile 3-in-1 air fryer offers Air Fry for healthier meals with less oil, Bake for bakery-quality desserts and treats, and Reheat to bring leftovers back to life with crispy, flavorful results
Servings and Timing
Servings: 12 slices
Preparation time: 20 minutes
Baking time: 30 minutes
Cooling and frosting time: 45 minutes
Total time: 1 hour 35 minutes
Storage/reheating
Store the cake in an airtight container in the refrigerator for up to 4 days. Allow slices to sit at room temperature for 20 minutes before serving for the best texture. The cake can also be frozen unfrosted for up to 2 months, tightly wrapped.
Variations and Customizations
This Key Lime Cake can easily be adapted to suit different occasions and preferences. For a more intense citrus flavor, add a tablespoon of lime zest directly into the frosting and a thin layer of lime curd between the cake layers. The added tartness creates a delightful contrast against the creamy frosting.
If key limes are not available, regular Persian limes can be substituted. While slightly less aromatic, they still provide the necessary acidity and freshness.
For a coconut twist, fold shredded sweetened coconut into the batter or sprinkle it over the frosted cake. Coconut pairs beautifully with lime and gives the cake a tropical character.
To make cupcakes, divide the batter into lined muffin tins and bake for 18 to 20 minutes. This is a convenient option for parties or individual servings.
For a lighter frosting, reduce the powdered sugar slightly and whip longer to incorporate air. Alternatively, add a small amount of Greek yogurt for extra tang and creaminess.
If you prefer a more dramatic presentation, garnish with thin lime slices, candied lime peel, or extra zest scattered over the top. The visual appeal enhances the citrus-forward theme of the cake.
Nutrition and Dietary Info
Below is an approximate nutritional breakdown per serving (based on 12 slices):
| Nutrient | Amount per Serving |
|---|---|
| Calories | 480 kcal |
| Protein | 6 g |
| Carbohydrates | 60 g |
| Fat | 25 g |
| Saturated Fat | 15 g |
| Fiber | 1 g |
| Sugar | 45 g |
| Sodium | 240 mg |
This cake is rich and indulgent, best enjoyed in moderation. It can be adapted with reduced-sugar frosting or lower-fat cream cheese for lighter options.
Expert Tips & Customizations
Use Room Temperature Ingredients
Room temperature butter, eggs, and cream cheese ensure smooth batter and frosting.
Do Not Overmix
Mix only until ingredients are combined to maintain a tender crumb.
Zest Before Juicing
Always zest limes before squeezing them for easier handling.
Chill Before Slicing
Refrigerating the frosted cake briefly makes cleaner, more precise slices.
Balance Sweetness
Taste the frosting before assembling and adjust lime juice for preferred tartness.
FAQs
Can I make this cake in advance?
Yes, bake the layers a day ahead and frost the next day for best results.
Can I use bottled lime juice?
Fresh key lime juice is recommended for optimal flavor, but bottled can be used in a pinch.
Why is my cake dense?
Overmixing or using too much flour can result in a dense texture.
Can I make this into a sheet cake?
Yes, bake in a 9×13-inch pan and adjust baking time to about 35 to 40 minutes.
How do I prevent the frosting from being too soft?
Chill the frosting briefly before spreading if your kitchen is warm.
Can I make this dairy-free?
Substitute plant-based butter and cream cheese alternatives for a dairy-free version.
Conclusion
This Key Lime Cake with Key Lime Cream Cheese Frosting delivers bright citrus flavor wrapped in a moist, tender crumb and creamy frosting. It is refreshing, elegant, and versatile enough for both casual gatherings and special occasions. With its balanced sweetness and vibrant tang, this cake is sure to become a favorite centerpiece dessert.
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