As I pulled the warm, golden-brown loaf from the oven, the kitchen filled with a tangy aroma that promised a slice of sunshine. This Moist & Tangy Key Lime Pound Cake is a delightful fusion of buttery richness and vibrant citrus flavor that will take your dessert game to the next level. With its simple ingredients and quick prep time, it’s the perfect homemade treat for gatherings or just a cozy night in. Whether you’re a seasoned baker or just dipping your toes into the world of homemade desserts, you’ll find this key lime twist is as approachable as it is satisfying. Ready to discover how this zesty delight can brighten your table? Let’s dive into the recipe!

Why is this Key Lime Cake a Must-Try?
**Bright, ** tangy flavors dance on your taste buds, making every bite a celebration of citrus. **Simplicity, ** with just a few basic ingredients, this recipe is perfect for all skill levels—no professional chef required! Beautifully versatile, tailor it to your taste by adding coconut or nuts. Quick to prepare, you’ll be enjoying a slice in no time—perfect for unexpected guests. Plus, crowd-pleasing appeal: it’s a delightful option for any gathering, much like my Strawberry Cheesecake Dump cake or the refreshing Watermelon Lime Mint mocktail. Get ready to impress!
Key Lime Pound Cake Ingredients
For the Batter
- All-purpose flour – This forms the structural base of your cake; consider using gluten-free flour for a delightful alternative.
- Granulated sugar – Adds essential sweetness and helps retain moisture; you can swap with brown sugar for a subtle caramel twist.
- Unsalted butter – Provides richness and moisture; margarine can work well if you need a dairy-free option.
- Eggs – Essential for structure and moisture; opt for egg substitutes to create a vegan-friendly version.
- Fresh key lime juice – The star ingredient that brings vibrant flavor and acidity; regular lime juice could be used but will have a different taste.
- Key lime zest – Intensifies the lime flavor; lemon zest makes a bright alternative if you wish to mix things up.
- Powdered sugar – Perfect for making a sweet glaze with an ultra-smooth finish; feel free to cut back on sugar for a lighter touch.
For the Glaze
- Lime juice – Adds an extra zing to the glaze that complements the cake beautifully; use fresh for the best flavor.
- Powdered sugar – Essential for sweetness and achieving that glossy finish on your glaze; can be adjusted to taste based on your sweetness preference.
This Key Lime Pound Cake is a delightful treat that transforms traditional flavors into a refreshing dessert perfect for any occasion!
Step‑by‑Step Instructions for Key Lime Pound Cake
Step 1: Preheat Oven and Prepare Pan
Start by preheating your oven to 350°F (175°C). While it heats up, grab a 9×5 inch loaf pan and lightly coat it with baking spray or line it with parchment paper. This ensures your key lime pound cake releases easily after baking.
Step 2: Combine Dry Ingredients
In a medium mixing bowl, whisk together 2 cups of all-purpose flour, 1 teaspoon of baking powder, and the zest of 2 key limes. Mix until well combined, making sure there are no lumps. This dry mixture forms the backbone of your cake, so take a moment to ensure everything is evenly distributed.
Step 3: Cream Butter and Sugar
In a large bowl, use an electric mixer to cream together 1 cup of unsalted butter and 2 cups of granulated sugar. Beat on medium-high for about 3-5 minutes until the mixture is light and fluffy. This will help your key lime pound cake achieve that delightful airy texture, so be sure to whip it well.
Step 4: Add Eggs and Wet Ingredients
Next, add 4 large eggs to the butter-sugar mixture, one at a time, mixing thoroughly after each addition. Then, pour in ½ cup of fresh key lime juice and 1 teaspoon of vanilla extract, blending until smooth. The mixture should be creamy and well incorporated, enveloping all that luscious citrus flavor.
Step 5: Mix in Dry Ingredients
Gradually add the dry ingredients into the wet mixture, stirring gently with a spatula until just combined. Take care not to overmix; a few flour streaks are fine. This step is crucial for ensuring your key lime pound cake has that perfect tender crumb, so mix with love and care.
Step 6: Transfer Batter to Pan
Carefully pour the batter into your prepared loaf pan, smoothing the top with a spatula for an even bake. It should fill the pan about two-thirds full to allow for rising. With its bright, zesty smell already wafting through the kitchen, this key lime pound cake will be hard to resist!
Step 7: Bake Cake
Place the loaf pan in the preheated oven and bake for approximately 60 minutes. Keep an eye out for a golden-brown crust, and test doneness by inserting a toothpick into the center; it should come out clean. If not ready, give it a few more minutes, but avoid opening the oven too often.
Step 8: Cool the Cake
Once baked, remove the key lime pound cake from the oven and allow it to cool in the pan for about 10 minutes. Then, gently transfer it to a wire rack to cool completely. This cooling process is essential for achieving the perfect slice without crumbling.
Step 9: Optional Glaze
If desired, whisk together 1 cup of powdered sugar with 2 tablespoons of fresh lime juice to create a smooth glaze. Drizzle it over the cooled cake, letting it cascade down the sides for a beautiful finish. This adds just the right amount of sweetness to your key lime pound cake, enhancing the tangy flavor.

Key Lime Pound Cake Variations
Feel free to unleash your creativity as you customize this bright and zesty cake to your taste!
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Citrus Swap: Replace key lime juice with lemon or regular lime juice for a different twist. Each brings its own unique brightness.
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Nutty Add-Ins: Add 1 cup of chopped walnuts or pecans to the batter for a lovely crunch. It’s a delightful surprise in each bite.
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Coconut Bliss: Incorporate 1 cup of shredded coconut into your batter for a tropical flair. This elevates the cake with a chewy texture and summery vibe.
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Cream Cheese Frosting: Top your cooled pound cake with a fluffy cream cheese frosting for an indulgent twist. Rich and tangy, it complements the cake’s citrusy notes beautifully.
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Zesty Glaze: Enhance the glaze by infusing it with citrus zest from lemons or oranges. This added layer of flavor will truly excite your palate!
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Spicy Kick: Stir in a pinch of cayenne pepper or cinnamon into the batter for a warming surprise. This twist effortlessly creates a new depth of flavor.
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Berry Addition: Fold in 1 cup of fresh blueberries or raspberries into the batter for a fruity explosion. The berries add not just flavor but a pop of color!
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Brown Sugar Variation: Substitute granulated sugar with brown sugar for more caramel notes. This makes your key lime pound cake deeply delicious and adds a hint of chewiness.
As you explore these variations, don’t forget to enjoy the vibrant flavors, much like you would with my Caramel Crunch Cake or the light delight of a Cloud Cake. Happy baking!
What to Serve with Moist & Tangy Key Lime Pound Cake
Create a full culinary experience with delightful accompaniments that complement the bright flavors of your cake.
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Fresh Berries: Juicy strawberries, blueberries, or raspberries add a pop of color and natural sweetness, balancing the cake’s tanginess.
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Whipped Cream: Light and airy, a dollop of freshly whipped cream brings a luscious creaminess that enhances each slice’s vibrant taste.
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Coconut Flakes: Toasted coconut flakes provide a chewy texture and a hint of tropical flavor that pairs beautifully with key lime.
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Mint Tea: A refreshing glass of mint tea offers a soothing contrast to the zesty flavors of the cake, making for a perfect afternoon treat.
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Citrus Salad: A light citrus salad of oranges and grapefruit adds a refreshing contrast, further highlighting the key lime notes in the pound cake. Serve it chilled for a delightful palate cleanser.
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Lime Glaze Drizzle: Elevate your slice with an extra drizzle of lime glaze; it intensifies the citrus flavor and adds a sweet finish that pairs impeccably with the cake’s moisture.
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Sparkling Water: For a fizzy refreshment, sparkling water infused with lime slices is a perfect drink choice, accentuating the fruity elements of the cake.
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Cream Cheese Frosting: If you want to indulge further, a light layer of cream cheese frosting can add rich, tangy sweetness, creating a beautiful contrast in flavors.
Expert Tips for Key Lime Pound Cake
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Use Fresh Limes: Fresh key lime juice is essential for the best flavor. Bottled juices can lead to a muted taste, making your cake less vibrant.
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Avoid Overmixing: Gently mix the batter after adding dry ingredients to maintain a tender crumb. Overmixing can result in a tough cake, which we want to avoid.
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Check Oven Temperature: Use an oven thermometer to ensure accurate baking temperatures. An oven that’s too hot can lead to uneven baking, ruining your key lime pound cake.
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Cool Slowly: Let the cake cool in the pan for the specified time to prevent it from breaking. A rushed transfer might lead to a crumbly mess.
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Prepare for Glazing: Ensure your cake has cooled completely before adding the glaze. A warm cake will cause the glaze to melt away, and we want that beautiful finish!
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Store Properly: Keep your key lime pound cake in an airtight container at room temperature for optimal freshness. Always enjoy a slice of sunshine!
Make Ahead Options
Preparing the Moist & Tangy Key Lime Pound Cake in advance is a fantastic way to simplify your baking routine! You can make the batter up to 24 hours ahead of time by pouring it into the loaf pan, covering it tightly with plastic wrap, and refrigerating until ready to bake. This not only saves you time but enhances the flavors as they meld together overnight. When you’re ready to enjoy, simply preheat your oven and bake as directed. If you want to keep the cake fresh after baking, store it in an airtight container at room temperature for up to 3 days or refrigerate for longer shelf life. Trust me, it will be just as delicious when you finally slice in!
How to Store and Freeze Key Lime Pound Cake
Room Temperature: Store your cake in an airtight container for up to 3 days. This keeps it moist and preserves its tangy flavor for a delightful treat.
Fridge: If you want to extend freshness, refrigerate the cake for up to a week. Wrap it tightly in plastic wrap to prevent drying out and absorbing odors from the fridge.
Freezer: You can freeze Key Lime Pound Cake for up to 3 months. Slice the cake for easy thawing and wrap each piece in plastic wrap, followed by aluminum foil, ensuring no air gets in.
Reheating: For the best flavor, let thawed cake sit at room temperature for a short while. Reheat in the microwave for 10-15 seconds or enjoy it cold for a refreshing citrus bite!

Key Lime Pound Cake Recipe FAQs
How do I select ripe key limes?
Absolutely! When selecting key limes, look for those that are small, firm, and slightly yellowish in color. Avoid limes with dark spots or blemishes, as these may indicate overripeness. Squeeze them gently; a ripe key lime should feel slightly soft but not mushy.
What’s the best way to store leftover key lime pound cake?
Very! For the best results, keep your key lime pound cake in an airtight container at room temperature for up to 3 days. If you want to extend its freshness, refrigerate it for up to a week, ensuring it’s wrapped tightly to prevent drying out or absorbing odors from the fridge.
Can I freeze key lime pound cake? How?
You sure can! To freeze your key lime pound cake, slice it into pieces for easy thawing. Wrap each slice in plastic wrap, making sure no air is inside, and then place them in a zip-top freezer bag or an airtight container. This way, it can stay fresh in the freezer for up to 3 months. When ready to enjoy, simply let the slices thaw at room temperature or pop them in the microwave for about 10-15 seconds for a fresh taste.
What if my pound cake turns out dense?
Oh no! A moist key lime pound cake can sometimes turn out dense if overmixed. When you add the dry ingredients to the wet, mix gently until just combined. This helps maintain a tender crumb. Also, ensure your baking powder is fresh and your butter-sugar mixture is fluffy enough at the start.
Is this key lime pound cake safe for people with allergies?
Absolutely! This recipe contains common allergens like gluten, dairy, and eggs. If you need to adapt it for dietary restrictions, consider using gluten-free flour, dairy-free margarine, and egg substitutes like flax eggs or applesauce. Always double-check ingredients to ensure safety for those with allergies.
Can I add a glaze to my key lime pound cake? How do I make it?
Yes indeed! A delightful glaze can elevate your key lime pound cake. To make it, whisk together 1 cup of powdered sugar with 2 tablespoons of fresh lime juice until smooth. Drizzle it over the cooled cake after letting it sit for about 10 minutes. This adds a sweet and tangy finish that perfectly complements the cake!

Irresistibly Moist Key Lime Pound Cake for Sweet Sunshine
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C) and prepare a 9x5 inch loaf pan.
- In a medium bowl, whisk together 2 cups of all-purpose flour, 1 teaspoon of baking powder, and the zest of 2 key limes.
- In a large bowl, cream together 1 cup of unsalted butter and 2 cups of granulated sugar for 3-5 minutes.
- Add 4 large eggs one at a time, then mix in ½ cup of fresh key lime juice and 1 teaspoon of vanilla extract.
- Gradually add the dry ingredients to the wet mixture, stirring gently until just combined.
- Pour the batter into the prepared loaf pan, smoothing the top with a spatula.
- Bake for approximately 60 minutes, testing doneness with a toothpick.
- Remove from oven and cool in the pan for about 10 minutes before transferring to a wire rack.
- For the glaze, whisk together 1 cup of powdered sugar with 2 tablespoons of fresh lime juice and drizzle over the cooled cake.

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