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key lime cake recipe

key lime cake recipe

  • Author: maria.ann
  • Prep Time: 20 minutes
  • Cook Time: 30 minutes
  • Total Time: 50 minutes
  • Yield: 8 servings
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian


Indulge in the tropical flavors of this key lime cake recipe, a moist and tangy treat that perfectly balances sweetness with the vibrant zest of key limes, bringing a slice of paradise to your table.


For the Cake:

  1. 2 1/2 cups all-purpose flour
  2. 1 1/2 cups granulated sugar
  3. 1/2 cup unsalted butter, softened
  4. 1 cup buttermilk
  5. 3 large eggs
  6. 1 tablespoon key lime zest
  7. 1/4 cup fresh key lime juice (about 6-8 key limes)
  8. 1 teaspoon baking powder
  9. 1/2 teaspoon baking soda
  10. 1/4 teaspoon salt

For the Icing:

  1. 4 cups powdered sugar
  2. 1/2 cup unsalted butter, softened
  3. 1/4 cup fresh key lime juice
  4. 1 tablespoon key lime zest
  5. 3-4 tablespoons milk or cream (adjust to achieve desired consistency


  1. Preheat the Oven: Preheat your oven to 350°F (175°C). Grease and flour two 8-inch round cake pans.
  2. Mix Wet Ingredients: In a large mixing bowl, cream together the butter and sugar until light and fluffy. Add in the eggs one at a time, mixing well after each addition. Stir in the key lime zest and juice.
  3. Mix Dry Ingredients: In another bowl, whisk together the flour, baking powder, baking soda, and salt.
  4. Combine: Gradually add the dry ingredients to the wet ingredients, alternating with the buttermilk. Begin and end with the flour mixture. Mix until just combined.
  5. Bake: Pour the batter into the prepared pans, smoothing the top with a spatula. Bake for 25-30 minutes or until a toothpick inserted into the center comes out clean. Remove from the oven and allow to cool in the pans for about 10 minutes, then transfer to a wire rack to cool completely.
  6. Prepare the Icing: In a mixing bowl, beat together the butter, powdered sugar, key lime juice, and zest until smooth. If the icing is too thick, gradually add milk or cream until you achieve the desired consistency.
  7. Ice the Cake: Once the cakes have cooled completely, spread a layer of icing on top of one cake layer. Place the second cake layer on top, and press down slightly. Spread icing over the top and sides of the assembled cake.


  • Serving Size: 1 slice
  • Calories: 520
  • Sugar: 68g
  • Sodium: 140mg
  • Fat: 20g
  • Saturated Fat: 12g
  • Unsaturated Fat: 6g
  • Trans Fat: 0g
  • Carbohydrates: 82g
  • Fiber: 1g
  • Protein: 5g
  • Cholesterol: 95mg

Keywords: Key Lime Cake, Tropical Dessert, Citrus Cake