Description

Key Lime Sheet Cake is a refreshing, tangy dessert that combines the vibrant flavor of key lime with a moist, fluffy cake and a creamy lime-infused frosting. This easy-to-make treat is perfect for any occasion, from summer gatherings to special celebrations, offering a delightful twist on the classic key lime pie!

Ingredients

For the Cake:

2 ½ cups all-purpose flour
1 ½ teaspoons baking powder
½ teaspoon baking soda
½ teaspoon salt
1 cup unsalted butter, softened
2 cups granulated sugar
4 large eggs
1 teaspoon vanilla extract
1 teaspoon lime zest (from 2 limes)
½ cup fresh lime juice (from about 4 limes)
½ cup buttermilk

For the Frosting:

8 oz cream cheese, softened
½ cup unsalted butter, softened
4 cups powdered sugar
1 teaspoon vanilla extract
1 tablespoon lime zest (from 1 lime)
2 tablespoons fresh lime juice
Pinch of salt

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Instructions

Making the Cake:
- Preheat the oven: Preheat to 350°F (175°C). Grease and flour a 9×13-inch baking pan or line with parchment paper.
- Mix dry ingredients: In a bowl, whisk together the flour, baking powder, baking soda, and salt. Set aside.
- Cream the butter and sugar: In a large mixing bowl, beat the softened butter and sugar until light and fluffy (about 3-4 minutes).
- Add eggs and flavorings: Add eggs one at a time, mixing well after each. Stir in vanilla extract, lime zest, and lime juice.
- Alternate mixing dry and wet ingredients: Gradually add the dry ingredients, alternating with buttermilk. Mix until just incorporated, being careful not to overmix.
- Bake the cake: Pour batter into the prepared pan. Bake for 30-35 minutes, or until a toothpick comes out clean. Cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.
Making the Frosting:
- Cream the butter and cream cheese: Beat the softened cream cheese and butter until smooth and creamy.
- Add powdered sugar: Gradually add powdered sugar, one cup at a time, until fully incorporated and smooth.
- Flavor the frosting: Stir in vanilla extract, lime zest, lime juice, and a pinch of salt. Beat until fluffy and well combined.
Assembling the Cake:
- Frost the cake: Once the cake is completely cooled, spread frosting evenly over the top with an offset spatula.
- Garnish (optional): For extra lime flavor, garnish with lime zest or thin lime slices.
Serving:
- Serve chilled or at room temperature and enjoy the zesty, refreshing flavors.

Notes

Make-Ahead: Bake the cake ahead of time, store it at room temperature, and frost just before serving. torage: Keep leftover cake in an airtight container in the refrigerator for up to 4-5 days.Variations: Add toasted coconut flakes on top for a tropical twist or substitute some of the lime zest with lemon zest for a lemon-lime version.