why make this recipe
Key Lime Cake is a refreshing dessert that brings a taste of the tropics right to your table. This bright and zesty cake is perfect for special occasions or just a sweet treat on a warm day. With its combination of tart key lime and creamy frosting, this cake delights everyone who tries it. Plus, it’s a fun and easy dessert to make, and you’ll impress your friends and family with your baking skills!
how to make Key Lime Cake
Ingredients:
- 1 cup unsalted butter, softened
- 1 3/4 cups granulated sugar
- 4 large eggs, room temperature
- 3 cups all-purpose flour
- 1 tablespoon baking powder
- 1/2 teaspoon baking soda
- 1/2 teaspoon salt
- 1 cup buttermilk
- 1/4 cup key lime juice (fresh or bottled)
- 1 tablespoon key lime zest
- 1 teaspoon vanilla extract
- 8 ounces cream cheese, softened
- 1/2 cup unsalted butter, softened
- 3 cups powdered sugar
- 2 tablespoons key lime juice
- 1 teaspoon vanilla extract
- Optional Garnish: Lime zest, Thin lime slices
Directions:
- Preheat the oven to 350°F (175°C). Grease and flour three 8-inch round cake pans.
- In a large bowl, cream together the butter and granulated sugar until light and fluffy.
- Add the eggs one at a time, beating well after each addition.
- In another bowl, whisk together the flour, baking powder, baking soda, and salt.
- Gradually add the dry ingredients to the butter mixture, alternating with the buttermilk, starting and ending with the flour mixture.
- Stir in the key lime juice, zest, and vanilla extract until well combined.
- Divide the batter evenly among the prepared cake pans.
- Bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean.
- Allow the cakes to cool in the pans for 10 minutes, then remove from pans and cool completely on a wire rack.
- For the frosting, beat together the cream cheese and butter until smooth.
- Gradually add the powdered sugar, followed by the key lime juice and vanilla extract, beating until fluffy.
- Once the cakes are completely cooled, frost the top of one cake layer, add the second layer, frost the top and sides, and repeat with the last layer.
- Garnish with lime zest and thin lime slices if desired.
- Slice and serve.
how to serve Key Lime Cake
Serve Key Lime Cake cold or at room temperature. It’s delightful on its own, but you can also pair it with a scoop of vanilla ice cream or some fresh whipped cream for extra indulgence.
how to store Key Lime Cake
Store any leftover Key Lime Cake in an airtight container in the refrigerator. It’s best enjoyed within 3-5 days. You can also freeze the cake by wrapping it tightly in plastic wrap, then aluminum foil. Just be sure to let it thaw in the fridge before serving.
tips to make Key Lime Cake
- Make sure your butter and eggs are at room temperature for easier mixing.
- Use fresh key limes if possible for the best flavor, but bottled juice works well too.
- Be careful not to overmix the batter to keep the cake light and fluffy.
- Allow the cakes to cool completely before frosting to prevent melting the frosting.
variation
You can change up this recipe by adding some coconut or crushed pineapple for a tropical twist. You could also use a different citrus juice like lemon or orange if you want to experiment with flavors.
FAQs
Q: Can I make this cake in advance?
A: Yes, you can bake the cake layers a day ahead. Just wrap them well and store them in the refrigerator until you’re ready to frost.
Q: Is this cake suitable for gluten-free diets?
A: You can substitute all-purpose flour with a gluten-free flour blend to make this cake gluten-free.
Q: Can I reduce the sugar in the cake?
A: While you can reduce the sugar, keep in mind that it may affect the texture and moisture of the cake. Try to stick to the recipe for the best results.

Key Lime Cake
Ingredients
Method
- Preheat the oven to 350°F (175°C). Grease and flour three 8-inch round cake pans.
- In a large bowl, cream together the butter and granulated sugar until light and fluffy.
- Add the eggs one at a time, beating well after each addition.
- In another bowl, whisk together the flour, baking powder, baking soda, and salt.
- Gradually add the dry ingredients to the butter mixture, alternating with the buttermilk, starting and ending with the flour mixture.
- Stir in the key lime juice, zest, and vanilla extract until well combined.
- Divide the batter evenly among the prepared cake pans.
- Bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean.
- Allow the cakes to cool in the pans for 10 minutes, then remove from pans and cool completely on a wire rack.
- For the frosting, beat together the cream cheese and butter until smooth.
- Gradually add the powdered sugar, followed by the key lime juice and vanilla extract, beating until fluffy.
- Once the cakes are completely cooled, frost the top of one cake layer, add the second layer, frost the top and sides, and repeat with the last layer.
- Garnish with lime zest and thin lime slices if desired.
- Slice and serve Key Lime Cake cold or at room temperature, optionally paired with vanilla ice cream or fresh whipped cream.