Step-by-step instructions
- Start by preheating your oven to 350°F (175°C). Prepare two 9-inch round cake pans by greasing and flouring them.
- In a medium bowl, whisk together the flour, baking powder, and salt. Set this mixture aside.
- In a large mixing bowl, cream the softened butter and sugar together until the mixture is light and fluffy.
- One at a time, add the eggs to the butter mixture, ensuring you mix thoroughly after each addition.
- Stir in the buttermilk, freshly squeezed key lime juice, lime zest, and vanilla extract until well combined.
- Gradually fold in the dry ingredients from the medium bowl, mixing until just combined—don’t overmix!
- Divide the cake batter evenly between the two prepared pans.
- Bake for 25-30 minutes, or until a toothpick inserted into the center emerges clean.
- Once baked, allow the cakes to cool in their pans for about 10 minutes, then transfer them to wire racks to cool completely.
- If desired, frost the cooled cakes with a tangy key lime frosting for an extra zesty kick.
Best ways to enjoy it
To truly savor your Key Lime Cake, consider serving it with a dollop of whipped cream. Fresh berries, such as strawberries or blueberries, make for a vibrant garnish that complements the cake beautifully. For a festive touch, you can also sprinkle some lime zest on top before serving. Pairing it with iced tea or a light sparkling beverage will complete the tropical vibe.
Keeping leftovers fresh
Storing leftovers properly will help you enjoy your Key Lime Cake for days. Once completely cooled, you can wrap individual slices in plastic wrap and store them in an airtight container in the refrigerator for up to a week. For longer storage, freeze slices in a freezer-safe container for up to three months. Just be sure to let it thaw in the refrigerator before enjoying!
Helpful cooking tips
If you’re looking to enhance your Key Lime Cake, here are a few tips:
- Use room temperature ingredients to help the batter mix evenly.
- Don’t skip the zest! It adds an incredible burst of flavor to the cake.
- Experiment with a coconut frosting for a delicious tropical twist.
- Always check the doneness of the cake by inserting a toothpick; it should come out clean.
Creative twists
If you’re in the mood to add some flair, consider these variations:
- Create a layered cake by making a third layer and interspersing with creamy lime filling.
- For a citrus twist, combine Meyer lemons with the key limes.
- Turn it into cupcakes for a portable version of this refreshing treat.
- Have fun with toppings—try coconut flakes, lime curd, or even a light glaze for a shine.

Your questions answered
Q: How long does preparation take?
A: Preparation takes about 20-30 minutes, while baking requires an additional 25-30 minutes.
Q: Can I make this cake gluten-free?
A: Yes! Substitute all-purpose flour with a 1:1 gluten-free flour blend.
Q: How should I store leftover Key Lime Cake?
A: Keep it in an airtight container in the refrigerator for up to a week, or freeze slices for up to three months.
Now you’re all set to make and enjoy a delightful Key Lime Cake that’s perfect for any occasion! Happy baking!






