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This Key Lime Layer Cake is a citrus lover’s dream! Featuring layers of fluffy lime cake, tangy lime curd, and smooth cream cheese frosting, this refreshing dessert is perfect for any occasion.

Ingredients

Units Scale
  • 2 1/2 cups all-purpose flour
  • 2 1/2 tsp baking powder
  • 1/2 tsp salt
  • 1 cup unsalted butter, softened
  • 2 cups granulated sugar
  • 4 large eggs
  • 1 tbsp key lime zest
  • 1/2 cup key lime juice
  • 1 cup buttermilk

 

  • 1 tsp vanilla extract

Instructions

  • Prepare the Cake:

    • Preheat oven to 350°F (175°C). Grease and line three 8-inch cake pans.
    • In a bowl, whisk flour, baking powder, and salt.
    • In a separate bowl, beat butter and sugar until fluffy. Add eggs one at a time.
    • Mix in lime zest, lime juice, and vanilla.
    • Alternate adding flour mixture and buttermilk, mixing until combined.
    • Divide batter into pans and bake for 22-25 minutes. Let cool.
  • Make the Lime Curd:

    • In a saucepan, whisk lime juice, sugar, and eggs over low heat.
    • Stir constantly until thickened, about 7 minutes.
    • Remove from heat and stir in butter. Cool completely.
  • Prepare the Frosting:

    • Beat cream cheese and butter until smooth.
    • Add powdered sugar and vanilla, beating until fluffy.

 

  • Assemble the Cake:

    • Spread a layer of lime curd between cake layers.
    • Frost the entire cake with cream cheese frosting.
    • Garnish with lime slices and zest.

Notes

  • For extra moisture, brush cake layers with a simple syrup made of sugar and lime juice.

 

  • Chill the cake for an hour before serving for best texture.