Key Lime Pound Cake

There’s something special about a dessert that feels rich and refreshing at the same time. That’s exactly what makes Key Lime Pound Cake such a favorite. It has the buttery, dense texture people love in a classic pound cake, but the bright citrus flavor keeps every bite from feeling heavy.

If you enjoy Key lime pie but want something easier to serve at potlucks, family gatherings, or weekend brunches, this cake checks all the boxes. It’s simple enough for a casual Tuesday evening and impressive enough for holidays and celebrations.

Even better, most of the ingredients are probably already sitting in your kitchen.

Why You’ll Love This Key Lime Pound Cake

Some desserts look beautiful but take hours to make. Others are easy but forgettable. However, this recipe sits comfortably in the sweet spot between the two.

A few reasons home bakers keep coming back to it:

Rich buttery flavor balanced by fresh citrus
Moist texture that stays delicious for several days
Simple ingredients found in most grocery stores
Perfect make-ahead dessert for parties
Easy glaze that adds extra Key lime flavor
Freezes beautifully for future cravings

Plus, that bright lime aroma filling your kitchen while it bakes isn’t a bad bonus either.

Ingredients

Ingredients for the Pound Cake

1 cup unsalted butter, softened
2 cups granulated sugar
4 large eggs, room temperature
3 cups all-purpose flour
1 teaspoon baking powder
½ teaspoon salt
1 cup sour cream
¼ cup Key lime juice
2 tablespoons Key lime zest
1 teaspoon vanilla extract

Ingredients for the Key Lime Glaze

2 cups powdered sugar
3–4 tablespoons Key lime juice
1 teaspoon lime zest, optional

Important Ingredient Notes for the Best Texture and Flavor

A few simple ingredient tips can make a big difference.

Start with room-temperature ingredients: Let the butter, eggs, and sour cream sit out for 30–60 minutes. As a result, the batter will mix more smoothly and bake with a better texture.

Don’t skip the zest: Lime zest provides most of the fresh citrus aroma. In fact, it gives the cake its signature Key lime flavor.

Sour cream is essential: It adds moisture, richness, tenderness, and a slight tang. Plus, it helps keep the cake soft for days.

Step-by-Step Instructions

Step 1: Prepare the Bundt Pan

First, preheat your oven to 325°F.

Next, thoroughly grease a 10-inch Bundt pan, making sure to reach every corner and curve.

After that, lightly dust the pan with flour and tap out the excess.

Because Bundt pans have so many curves, a properly prepared pan can mean the difference between a beautiful cake and a baking disaster.

Step 2: Cream the Butter and Sugar

Place the softened butter and sugar into a mixing bowl.

Then, beat on medium speed for about 3 to 5 minutes.

The mixture should become noticeably lighter in color and texture. As a result, this step creates tiny air pockets that help produce the perfect crumb.

Don’t rush it.

Step 3: Add the Eggs One at a Time

Add the eggs one at a time.

After each addition, mix well before adding the next egg.

The batter should remain smooth and silky. However, if it looks slightly curdled at any point, don’t panic. Once the flour is added, everything usually comes together.

Step 4: Mix the Dry Ingredients Separately

Meanwhile, in a separate bowl, whisk together:

Flour
Baking powder
Salt

This helps distribute the leavening evenly throughout the batter.

Step 5: Alternate the Dry Ingredients and Sour Cream

Gradually add the flour mixture and sour cream.

Alternate between them until fully incorporated.

For best results, mix only until combined.

Overmixing can create a tougher cake, and nobody wants that.

Step 6: Add the Key Lime Juice, Zest, and Vanilla

Next, stir in:

Key lime juice
Lime zest
Vanilla extract

At this stage, the batter should smell incredible.

Bright. Fresh. Citrusy.

Exactly what you’re looking for.

Step 7: Bake the Key Lime Pound Cake

Pour the batter into the prepared pan.

Then, smooth the top.

Bake for approximately 75 to 90 minutes.

The cake is done when:

A toothpick comes out clean
The top springs back lightly
The edges begin pulling slightly away from the pan

Every oven behaves differently, so begin checking around the 75-minute mark.

Step 8: Cool the Cake Before Glazing

Allow the cake to cool in the pan for about 15 minutes.

Then, invert it onto a wire rack.

Let it cool completely before adding the glaze.

This part requires patience. Otherwise, the glaze may melt too quickly because warm cake and glaze rarely cooperate.

Step 9: Make the Key Lime Glaze

Whisk together powdered sugar and Key lime juice until smooth.

If it’s too thick, add a little more juice.

If it’s too thin, add more powdered sugar.

The consistency should be thick enough to cling to the cake while still flowing naturally down the sides.

Step 10: Glaze, Slice, and Serve

Once the cake has cooled completely, drizzle the glaze generously over the top.

Then, finish with extra lime zest if desired.

Let the glaze set for 15 to 20 minutes before slicing.

Finally, grab a fork, because waiting any longer becomes surprisingly difficult.

Tips for Making the Best Key Lime Pound Cake

A few simple tips can help your Key Lime Pound Cake turn out perfectly every time.

Measure flour correctly: Spoon flour into the measuring cup and level it off to avoid a dry cake.

Use softened butter: Butter should be soft but not melted. This helps the butter cream properly with the sugar and creates a lighter texture.

Don’t overmix: Once the flour is added, mix just until combined to keep the cake tender.

Use fresh lime zest: It adds the brightest citrus flavor and aroma.

Let the cake rest: In fact, the flavor becomes even better after a few hours or overnight.

Easy Key Lime Pound Cake Variations

One reason Key Lime Pound Cake remains so popular is its flexibility.

The base recipe works beautifully with a few creative twists.

Coconut Key Lime Pound Cake Variation

Add:

1 cup sweetened shredded coconut

Then, top with:

Toasted coconut flakes
Extra lime zest

The tropical combination feels like a vacation on a plate.

Cream Cheese Key Lime Pound Cake Variation

For a richer version, replace part of the butter with cream cheese.

Benefits include:

Richer flavor
Slight tanginess
Extra moist texture

This version is especially popular during holidays.

Berry Key Lime Pound Cake Variation

Serve slices with:

Fresh strawberries
Blueberries
Raspberries

The sweet berries complement the tart lime beautifully. Plus, they add a fresh, colorful finish.

Almond Key Lime Pound Cake Variation

Add:

½ teaspoon almond extract

The subtle nutty note pairs surprisingly well with citrus.

It’s a small change, but it creates a bakery-style flavor profile.

Common Key Lime Pound Cake Problems and Easy Fixes

Even experienced bakers occasionally run into issues.

Fortunately, most problems have simple solutions.

Why Is My Key Lime Pound Cake Dry?

Possible causes:

Too much flour
Overbaking
Incorrect oven temperature

Fix:

Check doneness earlier
Use an oven thermometer
Measure flour carefully

Why Did My Pound Cake Sink in the Middle?

Possible causes:

Opening the oven too early
Underbaking
Too much liquid

Fix:

Keep the oven door closed during the first hour
Bake until the center is fully set

Why Did My Cake Stick to the Bundt Pan?

Bundt pans are beautiful, but they can be unforgiving.

Fix:

Grease every corner thoroughly
Flour the pan after greasing
Let the cake cool for 10–15 minutes before removing

Why Is My Key Lime Glaze Too Thin?

Easy fix:

Add more powdered sugar

Why Is My Key Lime Glaze Too Thick?

Easy fix:

Add Key lime juice one teaspoon at a time

Why Can’t I Taste the Lime Flavor?

Possible causes:

Not enough zest
Old bottled juice
Too much sugar in the glaze

Fix:

Increase zest
Use fresh juice when possible
Add a little extra lime juice to the glaze

How to Store Key Lime Pound Cake

One of the best things about pound cake is how well it keeps.

Storing Key Lime Pound Cake at Room Temperature

Store in an airtight container.

It keeps fresh for:

3 to 4 days

Storing Key Lime Pound Cake in the Refrigerator

Store covered.

It keeps fresh for:

Up to 1 week

For the best texture, allow slices to come to room temperature before serving.

How to Freeze Key Lime Pound Cake

This cake freezes exceptionally well.

To freeze:

Wrap tightly in plastic wrap.
Then, wrap again in aluminum foil.
Freeze for up to 3 months.
Afterward, thaw overnight in the refrigerator.

Make-Ahead Tips for Parties and Gatherings

For parties and gatherings:

Bake 1–2 days in advance
Store covered
Add glaze the day of serving

As a result, the cake often tastes even better than a freshly baked one.

What to Serve With Key Lime Pound Cake

This cake shines on its own, but a few simple additions can make dessert feel extra special.

Fresh Fruit Pairings

Excellent pairings include:

Strawberries
Blueberries
Blackberries
Mango
Pineapple

Whipped Toppings

Try:

Homemade whipped cream
Coconut whipped cream
Vanilla whipped topping

Drinks That Pair Well With Key Lime Pound Cake

For brunch:

Coffee
Latte
Iced coffee

For summer gatherings:

Sweet tea
Lemonade
Sparkling water

For adult celebrations:

Moscato
Riesling
Prosecco

Nutrition Info

Estimated per slice, based on 12 servings:

Calories: 500–650
Carbohydrates: 60–80g
Fat: 25–35g
Protein: 5–8g
Sugar: 40–55g

Actual values will vary depending on ingredient brands and serving size.

FAQs

1. Can I Use Regular Limes Instead of Key Limes?

Yes. Regular limes work well, though the flavor will be slightly less tart and aromatic.

2. Can I Make This Cake Ahead of Time?

Yes. In fact, the flavor often improves after sitting for a day.

3. Can I Freeze Key Lime Pound Cake?

Absolutely. Wrap it tightly and freeze for up to 3 months.

4. Do I Need Both Lime Juice and Lime Zest?

Yes. Juice adds tartness, while zest provides the strongest citrus flavor.

5. Can I Make This Recipe in Loaf Pans?

Yes. Divide the batter between two loaf pans and bake for about 50–60 minutes.

6. Can I Add Cream Cheese Frosting Instead of Glaze?

Absolutely. Cream cheese frosting adds extra richness and pairs beautifully with the lime flavor.

Final Thoughts

If you’re looking for an easy dessert that’s both rich and refreshing, this Key Lime Pound Cake is a perfect choice. With its buttery texture, bright citrus flavor, and sweet-tart glaze, it’s ideal for everything from family gatherings to a simple afternoon treat. Overall, one slice is never quite enough, so don’t be surprised if it disappears quickly.

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Don’t Miss: Easy Lemon Blueberry Trifle

Also Try: Apple Butter Cake