If you love desserts that balance rich, buttery comfort with a bright pop of citrus, this Key Lime Pound Cake recipe is about to become a favorite in your kitchen. Dense yet tender, sweet but tangy, and finished with a simple key lime glaze, this cake delivers classic pound cake texture with a refreshing Florida-inspired twist.
Key lime desserts have a way of tasting nostalgic and elegant at the same time. While key lime pie often steals the spotlight, transforming that signature citrus flavor into a pound cake creates a dessert that’s perfect for family gatherings, potlucks, church dinners, holidays, or just an everyday treat with a cup of coffee.
This guide walks you through everything you need to know about making the best key lime pound cake—from ingredient tips and baking techniques to storage, variations, and serving ideas—so you can bake it with confidence every single time.
Why You’ll Love This Key Lime Pound Cake
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There’s a reason pound cakes have stood the test of time. This key lime version elevates the classic with fresh citrus flavor while keeping everything we love about traditional pound cake.
This recipe is:
- Rich and buttery with a tight, moist crumb
- Bright and citrusy without being overpowering
- Easy to make with simple pantry ingredients
- Perfect for make-ahead desserts
- Ideal for slicing, gifting, and entertaining
Unlike lighter sponge cakes, pound cake holds up beautifully under glaze and stays moist for days, making it a go-to dessert for busy schedules.
What Makes Key Limes Special?
Key limes are smaller and more aromatic than regular Persian limes. They’re known for:
- A stronger, more floral citrus aroma
- Slightly more tart juice
- Thin, fragrant zest that packs a punch
While bottled key lime juice can work in a pinch, fresh key lime juice and zest give this pound cake its signature flavor. If key limes aren’t available, regular limes are an acceptable substitute, but the flavor will be a bit milder.
Ingredients for Key Lime Pound Cake
Cake Ingredients
- 3 cups all-purpose flour
- ½ teaspoon baking powder
- ½ teaspoon salt
- 2 cups granulated sugar
- 1 cup unsalted butter, softened
- 4 large eggs, room temperature
- 1 cup whole milk
- ¼ cup fresh key lime juice
- 1 tablespoon key lime zest
- 1 teaspoon vanilla extract
Key Lime Glaze
- 1 cup powdered sugar
- 2–3 tablespoons fresh key lime juice
Each ingredient plays an important role in achieving the perfect balance of flavor and texture. The butter provides richness, the sugar sweetens and tenderizes, and the lime juice adds brightness without overpowering the cake.
Step-by-Step Instructions
1. Prepare the Pan and Oven
Preheat your oven to 325°F (163°C). Grease and flour a 10-inch Bundt pan or tube pan, making sure to coat all crevices well to prevent sticking.
2. Mix the Dry Ingredients
In a medium bowl, whisk together the flour, baking powder, and salt. Set aside.
3. Cream the Butter and Sugar
In a large mixing bowl, beat the softened butter and sugar using a hand mixer or stand mixer. Mix for 3–5 minutes until light, fluffy, and pale in color. This step is crucial for incorporating air into the batter.
4. Add the Eggs
Add the eggs one at a time, beating well after each addition. This helps create a smooth, stable batter.
5. Add Flavorings
Mix in the key lime juice, key lime zest, and vanilla extract. The aroma at this stage is incredible and sets the tone for the finished cake.
6. Alternate Dry Ingredients and Milk
Gradually add the dry ingredients to the batter, alternating with the milk. Begin and end with the dry ingredients. Mix just until combined—overmixing can make the cake dense.
7. Bake
Pour the batter evenly into the prepared pan and smooth the top. Bake for 75–85 minutes, or until a toothpick inserted into the center comes out clean.
8. Cool Properly
Allow the cake to cool in the pan for 10–15 minutes, then invert onto a wire rack to cool completely before glazing.
How to Make the Key Lime Glaze
In a small bowl, whisk together powdered sugar and key lime juice until smooth and pourable. Adjust the juice amount depending on how thick or thin you like your glaze.
Drizzle the glaze over the cooled cake, letting it cascade down the sides and soak into the crumb.
Tips for the Best Pound Cake Texture
- Room-temperature ingredients blend more evenly
- Cream butter and sugar thoroughly for a lighter crumb
- Don’t rush the baking—pound cakes need time
- Tent loosely with foil if the top browns too quickly
- Let the cake cool fully before glazing
Flavor Variations to Try
Once you’ve mastered the base recipe, try these delicious twists:
- Coconut Key Lime Pound Cake: Add shredded coconut to the batter
- Cream Cheese Key Lime Pound Cake: Replace ½ cup butter with cream cheese
- Key Lime Drizzle Cake: Poke holes and pour glaze over warm cake
- Lime-Vanilla Pound Cake: Add extra vanilla for a softer citrus note
Serving Suggestions
This key lime pound cake pairs beautifully with:
- Fresh whipped cream
- Vanilla ice cream
- Fresh berries
- A cup of coffee or iced tea
It’s perfect for spring and summer gatherings but tastes just as good year-round.
How to Store Key Lime Pound Cake
- Room Temperature: Store covered for up to 3 days
- Refrigerator: Store up to 7 days in an airtight container
- Freezer: Wrap tightly and freeze up to 3 months
Thaw overnight in the refrigerator or at room temperature before serving.
Frequently Asked Questions
Can I use bottled key lime juice?
Yes, but fresh juice provides the best flavor.
Why bake at 325°F instead of 350°F?
Lower temperature allows the dense batter to bake evenly without drying out.
Can I make this in loaf pans?
Yes—divide batter into two loaf pans and bake 60–70 minutes.
Final Thoughts
This Key Lime Pound Cake recipe combines everything we love about classic pound cake with the bright, refreshing flavor of fresh citrus. It’s simple enough for beginner bakers yet impressive enough for special occasions.
If you’re looking for a dessert that’s timeless, flavorful, and guaranteed to disappear slice by slice, this one belongs in your recipe collection.
If you try this Key Lime Pound Cake, leave a comment and tell us how it turned out (and if you went heavy on that zesty glaze 😉). If you’re in the mood for more sweet, old-fashioned favorites, don’t miss our Homemade Fudge Brownies, Bread Pudding with Vanilla Sauce, and Old-Fashioned Molasses Cookies. For another easy dessert that’s perfect for sharing, try our White Chocolate Cranberry Cookies next—your dessert table will be covered for any get-together!
Ingredients
Method
- Preheat the oven to 325°F (165°C) and grease a bundt pan with butter or non-stick spray to ensure the cake doesn’t stick.
- In a large mixing bowl, beat together the butter and granulated sugar using an electric mixer on medium speed until the mixture becomes light and fluffy.
- Add the eggs one at a time, beating well after each addition until each egg is fully incorporated into the mixture.
- In a separate bowl, combine the all-purpose flour, baking powder, and salt, whisking them together to distribute the ingredients evenly.
- Alternately add the dry ingredients and whole milk to the butter mixture, starting and ending with the dry ingredients, and mix until just combined.
- Stir in the key lime juice, lime zest, and vanilla extract, folding until everything is thoroughly combined, but be careful not to overmix.
- Pour the batter into the prepared bundt pan, smoothing the top with a spatula, and place in the preheated oven.
- Bake for approximately 60 minutes, or until a toothpick inserted into the center of the cake comes out clean.
- Allow the cake to cool in the pan for 10 minutes before inverting onto a wire rack to cool completely before serving.
