Key Lime Sheet Cake

Key Lime Sheet Cake is a citrus take on buttermilk sheet cake, with a light frosting with a hint of lime, this cake is great for summertime gatherings.

KEY LIME SHEET CAKE

I am on a dessert kick lately. Not a great idea since it is summer swimsuit season. Oh well! Guess I will have to hit the gym. 🙂

During the summer I crave ALL the fresh citrus flavors. Key lime pie and lemon squares are always on my list to make. The tart, bright flavor just goes well with the warm weather. This key lime sheet cake is no exception. It is one of my favorite citrus desserts. A yummy combination of tart and sweet.

Sheet cakes are simple to make and I love that they feed a crowd. Made in a sheet pan, the cake itself is on the thin side but that allows for a nice cake to frosting ratio. Because after all, you can never have too much frosting.

How to Make Key Lime Sheet Cake

This lime sheet cake is easy to make, you don’t even need a mixer. Start with a big bowl and whisk together sugar, flour, baking soda and salt. Next, I juice enough limes to get ¼ cup of juice. About 2 limes. Bring lime juice and water to a boil. Just stick it in the microwave until it bubbles.

Pour the boiling water and lime juice into the flour mixture and stir. Add the melted butter and stir until combined. Next mix in buttermilk, vanilla, lime zest and eggs.  Pour the cake batter into a greased 11×17 rimmed baking sheet pan. Bake for 15 minutes and cool.

How to Make Key Lime Frosting

To make the lime frosting, stir together melted butter, powdered sugar, milk, vanilla and lime juice. Spread over the cake and then top with extra lime zest.

This is a great dessert for summer BBQ’s, family reunions, birthdays, you name it! A little scoop of vanilla ice cream on the side and you are set. Enjoy!

Key Lime Sheet Cake

4.35 from 40 votes

Key Lime Sheet Cake is a citrus take on buttermilk sheet cake, with a light frosting with a hint of lime, this cake is great for summertime gatherings.

Servings 15

Prep Time 10 minutes minutes

Cook Time 11 minutes minutes

Total Time 25 minutes minutes

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Ingredients

 

US Customary – Metric

For the Cake:

• 1 3/4 cups granulated sugar
• 2 cups all-purpose flour
• 1/4 teaspoon salt
• 1/2 teaspoon baking soda
• 1/2 cup salted butter melted
• 1/2 cup vegetable oil
• 3 fresh limes zest of 3 limes and ¼ cup fresh lime juice
• 3/4 cup boiling water
• 2 large eggs beaten
• 1/2 cup buttermilk
• 1 teaspoon vanilla extract

For the Frosting:

• 1/2 cup salted butter melted
• 4 cups powdered sugar
• 3 tablespoons whole milk
• 1 teaspoon vanilla extract
• 2 teaspoons lime juice
• lime zest for garnish

Instructions

 

• Preheat oven to 400ºF. Spray an 11×17" rimmed baking sheet with non-stick cooking spray.
• In a large bowl, whisk together sugar, flour, baking soda and salt. 1 ¾ cups granulated sugar, 2 cups all-purpose flour, ¼ teaspoon salt, ½ teaspoon baking soda
• Whisk in the melted butter, oil, lime zest and lime juice, and boiling water. ½ cup salted butter, ½ cup vegetable oil, 3 fresh limes, ¾ cup boiling water
• Whisk in eggs, buttermilk and vanilla. Whisk just until smooth. 2 large eggs, ½ cup buttermilk, 1 teaspoon vanilla extract
• Pour batter into prepared pan and bake for 11-13 minutes. The top should spring back when you touch it, or a toothpick inserted into the center should come out with a few moist crumbs. Allow the cake to cool for 15 minutes.
• In a medium bowl, whisk together melted butter, powdered sugar, milk, vanilla and lime juice. Stir until smooth. Spread frosting on cooled cake. Top with extra lime zest for garnish.

Notes

• Store the cake covered at room temperature for up to 3 days. This cake also freezes well in an airtight container for up to 3 months.
• Refer to the article above for more tips and tricks.
  The calories shown are based on the cake being cut into 15 pieces, with 1 serving being 1 slice of cake. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate. **We are not dietitians and recommend you seek a nutritionist for exact nutritional information. **

Nutrition

Calories: 468kcal | Carbohydrates: 72g | Protein: 3g | Fat: 19g | Saturated Fat: 12g | Cholesterol: 71mg | Sodium: 256mg | Potassium: 44mg | Sugar: 58g | Vitamin A: 615IU | Vitamin C: 0.2mg | Calcium: 24mg | Iron: 0.9mg

Author Julie Clark

Course Dessert

Cuisine American

Calories 468

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