Why You’ll Love This Recipe

This Key Lime Pound Cake offers everything you love about a traditional pound cake—moist, dense, and flavorful—with the added bonus of tropical citrus notes. The combination of key lime juice and zest gives the cake a refreshing zing that pairs beautifully with the rich, buttery crumb. The glaze adds a sweet and tangy finish that takes this cake to the next level. Plus, it’s easy to prepare in under an hour, making it the perfect dessert for both casual and special occasions.

Ingredients

1 (16.5 oz) box of vanilla pound cake mix
3/4 cup cold water
1/2 cup unsalted butter, melted
1 large egg
3 TB key lime juice
2 TB key lime zest
3 drops lime gel food coloring (optional)

For the Key Lime Glaze:

1 1/2 cups powdered sugar
6 TB key lime zest
4 TB key lime juice

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

Directions

Preheat the oven to 350°F and coat two small loaf pans with non-stick baking spray.
In a large mixing bowl, combine the cake mix, cold water, melted butter, egg, key lime juice, key lime zest, and gel food coloring (if using).
Divide the batter evenly between the two loaf pans and gently tap the pans on the countertop to release any air bubbles.
Place the loaf pans on a large baking sheet and bake for 30-35 minutes, or until a toothpick inserted into the center of the cake comes out clean.
Remove the cakes from the oven and place them on a wire rack to cool for 10 minutes before flipping them out of the pans.
For the glaze: In a medium bowl, whisk together the powdered sugar, lime juice, and lime zest until smooth.
Place the cooled cakes on a wire rack with a baking sheet underneath to catch the glaze drips. Slowly pour the glaze over the cakes, allowing it to set before cutting and serving.

Servings and Timing

Servings: This recipe makes 2 small loaf cakes, which can be sliced into about 8 servings each, depending on thickness.
Prep Time: 15 minutes
Cook Time: 30-35 minutes
Total Time: 45-50 minutes

Variations

Lemon Pound Cake: If you prefer lemon over lime, you can substitute the key lime juice and zest with lemon juice and zest for a tangy lemon pound cake.
Coconut Twist: Add 1/2 cup of shredded coconut to the batter for a tropical coconut-lime flavor.
Lime and Mint: For an added refreshing touch, you can mix in some finely chopped fresh mint into the batter or as a garnish on top of the glaze.

Storage/Reheating

Storage: Store the cake in an airtight container at room temperature for 3-4 days.
Freezing: You can freeze the pound cake for up to 2 months. Wrap it tightly in plastic wrap or aluminum foil and store in a freezer-safe bag.
Reheating: To enjoy the cake warm, simply place a slice in the microwave for 15-20 seconds or reheat in a 300°F oven for 5-10 minutes.

FAQs

1. Can I use regular lime juice instead of key lime juice?

Yes, you can substitute regular lime juice, but key lime juice gives a more authentic flavor that makes this recipe unique.

2. Can I use a different type of cake mix for this recipe?

Yes, you can experiment with other cake mixes, but vanilla cake mix pairs best with the key lime flavor.

3. Can I bake this as one large loaf instead of two small loaves?

Yes, you can bake it in one larger loaf pan. Just keep in mind that the baking time may be a little longer. Check for doneness using a toothpick.

4. Do I need to use the food coloring?

The food coloring is optional. It’s added for a vibrant green color that gives the cake a more festive look, but it doesn’t affect the taste.

5. Can I make this cake ahead of time?

Yes, this cake can be made a day or two in advance. Just store it in an airtight container to keep it fresh.

6. How do I know when the cake is done baking?

Insert a toothpick into the center of the cake. If it comes out clean or with just a few crumbs, the cake is done.

7. How long can I store the cake at room temperature?

The cake can be stored at room temperature for 3-4 days, as long as it is in an airtight container.

8. Can I add more key lime juice for a stronger flavor?

You can add a little extra key lime juice to the batter, but be careful not to add too much, as it can affect the texture of the cake.

9. Can I skip the glaze?

While the glaze adds extra flavor and moisture, you can skip it if you prefer a simpler version of the cake.

10. Can I freeze the cake?

Yes, this cake freezes well. Wrap it tightly in plastic wrap or foil and place it in a freezer-safe bag for up to 2 months.

Conclusion

This Key Lime Pound Cake is the perfect balance of sweet and tangy with a rich, buttery texture. Whether you’re making it for a special event or simply treating yourself to a tropical-inspired dessert, this cake will surely become a favorite. With its easy preparation and vibrant flavors, it’s a dessert that will impress every time.