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Key Lime Pound Cake: A Slice of Sunshine

My grandmother, bless her heart, had a recipe box overflowing with treasures. Some were scribbled on faded index cards, others clipped from magazines yellowed with age. But one that always stood out was her Key Lime Pound Cake. It wasn’t just the cake’s vibrant citrus aroma that filled her kitchen, but the way it transported you straight to a sun-drenched porch swing on a breezy Florida afternoon. Every bite was a reminder of simpler times, sweet laughter, and the unwavering love of family. To this day, the taste of Key Lime Pound Cake instantly brings back those cherished memories.

Recipe Overview

Prep Time: 20 minutes
Cook Time: 60-65 minutes
Total Time: 1 hour 20-25 minutes
Servings: 12
Yield: 1 cake
Dietary Type: Vegetarian

Ingredients

2 cups sugar
1 cup butter or 1 cup margarine, at room temperature
2 teaspoons key lime juice (Floribbean brand recommended)
2 teaspoons lime rind, finely grated
1 teaspoon vanilla
5 eggs, beaten
1/4 cup sour cream
2 cups flour
1/2 teaspoon baking soda

For the Glaze:

1/2 cup confectioners’ sugar
1 teaspoon key lime juice

Equipment Needed

Electric mixer
Large bowl
Measuring cups and spoons
Sifter
10-inch Bundt pan or tube pan
Wire rack
Small bowl for glaze

Instructions

Preheat your oven to 350 degrees Fahrenheit (175 degrees Celsius). Ensure your oven rack is positioned in the center for even baking.
In a large bowl, using an electric mixer, cream together the sugar and butter (or margarine). This is a crucial step – don’t rush it! Beat on medium speed until the mixture is light and fluffy. This usually takes about 3-5 minutes. The aeration achieved here is key to a tender crumb.
Add the key lime juice, lime rind, and vanilla to the creamed mixture. Mix well to combine. The aroma at this point should be incredibly inviting!
Add the beaten eggs one at a time, mixing well after each addition. Incorporating the eggs gradually prevents the batter from curdling and ensures a smooth emulsion.
Mix in the sour cream. This adds moisture and a subtle tang that complements the key lime flavor.
In a separate bowl, sift together the flour and baking soda. Sifting ensures that there are no lumps in the flour and that the baking soda is evenly distributed, leading to a lighter cake.
Gradually add the sifted flour mixture to the wet ingredients, mixing until just blended. Be careful not to overmix, as this can develop the gluten in the flour and result in a tough cake.
Spoon the batter into a greased and lightly floured 10-inch Bundt pan or tube pan. Make sure to grease every nook and cranny of the pan to prevent the cake from sticking. Dusting with flour after greasing adds an extra layer of protection.
Bake for 60-65 minutes, or until a skewer inserted into the center of the cake comes out clean. Start checking for doneness around the 55-minute mark. If the top of the cake is browning too quickly, you can tent it loosely with foil.
Cool the cake on a wire rack for 15-20 minutes before turning it out of the pan. This allows the cake to firm up slightly, making it easier to remove without breaking.
While the cake is cooling, prepare the glaze. In a small bowl, combine the confectioners’ sugar and key lime juice. Mix until smooth. If the glaze is too thick, add a tiny bit more key lime juice. If it’s too thin, add a little more confectioners’ sugar.
Pour the glaze over the warm cake, allowing it to drip down the sides. The warmth of the cake will help the glaze adhere and create a beautiful, glossy finish.
Let the cake cool completely before serving. This will allow the glaze to set and the flavors to meld together.

Expert Tips & Tricks

Room Temperature is Key: Ensure that your butter and eggs are at room temperature. This helps them emulsify properly, resulting in a smoother batter and a more tender cake.
Zest for Success: Don’t skip the lime zest! It adds a concentrated burst of lime flavor that really elevates the cake. Use a microplane or fine grater to avoid grating the bitter white pith underneath the zest.
Floribbean Key Lime Juice: While other brands of key lime juice will work, Floribbean brand is highly recommended for its authentic flavor.
Prevent Sticking: To ensure the cake releases cleanly from the pan, grease it thoroughly with shortening or butter and then dust it with flour. You can also use baking spray with flour already in it.
Make Ahead: The pound cake can be baked a day ahead and stored tightly wrapped at room temperature. Glaze just before serving.

Serving & Storage Suggestions

Serve the Key Lime Pound Cake sliced, either plain or with a dollop of whipped cream and a few fresh lime wedges. It pairs beautifully with a cup of coffee or a refreshing iced tea.

To store, wrap the cake tightly in plastic wrap or place it in an airtight container. It will keep at room temperature for up to 3 days, in the refrigerator for up to a week, or in the freezer for up to 2 months. To thaw, let it sit at room temperature for several hours.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	400.3 kcal	N/A
Calories from Fat	166 g	42%
Total Fat	18.5 g	28%
Saturated Fat	10.9 g	54%
Cholesterol	120.7 mg	40%
Sodium	221.8 mg	9%
Total Carbohydrate	54.7 g	18%
Dietary Fiber	0.6 g	2%
Sugars	38.5 g	N/A
Protein	5 g	10%

Variations & Substitutions

Lemon Lime: If you can’t find key limes, you can substitute with regular limes or a combination of lemon and lime juice.
Gluten-Free: Use a gluten-free all-purpose flour blend for a gluten-free version. You may need to add a little extra liquid to the batter to achieve the desired consistency.
Citrus Infusion: Infuse the sugar with lime zest for an even more intense citrus flavor. Simply combine the sugar and zest in a sealed container for a few days before using.
Coconut Twist: Add 1/2 cup of shredded coconut to the batter for a tropical twist.

FAQs (Frequently Asked Questions)

Q: Why is it important to use room temperature ingredients?
A: Room temperature butter and eggs emulsify more easily, creating a smoother batter and a more tender cake.

Q: Can I use regular lime juice instead of key lime juice?
A: While key lime juice is preferred for its unique flavor, regular lime juice can be used as a substitute, though the flavor profile will be slightly different.

Q: How do I prevent my cake from sticking to the pan?
A: Grease the Bundt pan thoroughly with shortening or butter, then dust with flour. You can also use a baking spray that contains flour.

Q: How do I know when the cake is done?
A: Insert a skewer into the center of the cake. If it comes out clean or with just a few moist crumbs, the cake is done.

Q: Can I freeze the Key Lime Pound Cake?
A: Yes, the cake freezes well. Wrap it tightly in plastic wrap and then in foil. It will keep in the freezer for up to 2 months.

Final Thoughts

I truly hope you give this Key Lime Pound Cake recipe a try. It’s a taste of sunshine, a slice of pure happiness, and a guaranteed crowd-pleaser. Whether you’re looking for a dessert to brighten up a weeknight or a showstopper for a special occasion, this cake is sure to deliver. Bake it with love, savor every bite, and don’t hesitate to share your feedback! Perhaps pair it with a scoop of vanilla ice cream or a refreshing margarita for the ultimate tropical treat. Happy baking!

Key Lime Pound Cake Recipe