Key Lime Sheet Cake

Key Lime Sheet Cake

Talk about a cake full of flavor! This Key Lime Sheet Cake is flavorful and buttery. It’s a delicious cake with a citrus cream cheese frosting that is perfect for the summer heat! 

Key Lime Sheet Cake on a white plate

Key Lime Sheet Cake is We’re huge fans of anything flavored like lime. That little bit of sour paired up with a little bit of sweet…it’s the perfect storm combination when it comes to recipes.

This is why when we’re craving something unique, we know that this sheet cake recipe is one that never lets us down. This cake will have you scraping the plate and running back to see if there is any more left in the dish.

Key Lime Sheet Cake with sliced limes

Simple to whip up and eat at home or a great cake to share with your family and friends. You’ll never be disappointed when you take the time to make this yummy cake.


Key Lime Sheet Cake

Sheet cakes are great for family gatherings, parties, BBQ’s or any time you need a dessert that will feed a crowd.

Key Lime Sheet Cake

Are you looking for an easy cake recipe that tastes like a true treat? You might want to consider making this one. This easy key lime cake will come together in no time and is sure to impress all that you serve it to.

What is the difference between regular limes and key limes?

Although they are similar key limes are more aromatic, with tarter and more floral juice. They are slightly yellow in color and contain more seeds.

We took a short cut and used Nellie’s Key Lime Juice for this recipe. They make a few different one’s that are good for this cake. Like wine if you can drink it you can cook with it.

How do you make Key Lime sheet Cake?

Preheat your oven to 350. You’ll start by mixing the dry ingredients util they are combined.

Add the oil, lime juice, eggs,vanilla and food coloring. Mixing until well combined. Scrape the sides of the bowl well and then mix it up again.

Pour the batter into a greased and floured pan and bake for 25-30 minutes in the preheated 350 degree oven.

When the cake is cool make your icing. Cream together the butter and cream cheese, until it is creamy and smooth.

Slowly add the powdered sugar until it is completely incorporated. Add a few drops of lemon juice at the end of the mixing.

Frost the cake and add a garnish it with crushed graham crackers. Add a slice of lime, serve.

What other sweet toppings would go well with this homemade key lime cake?

KeyLime Sheet Cake with graham cracker topping

If you’re not a huge fan of frosting, there are other toppings that you can try. One simple idea would be to have whipped cream on top, instead of frosting. This would keep it super light and airy and oh, so good! 

And if whipped cream and frosting isn’t your thing, don’t forget about the power of powdered sugar. With just a little bit of sprinkling on top, it’s the perfect amount of sweetness to enjoy. 

How long does this leftover cake last?

In our house, we have the rule to eat all desserts within 3 days of making them. And honestly they don’t last longer than that anyway! This is because they’ll be the freshest and have the most taste that way.

While it’s fine to eat them past that date, you may start to notice that the cake is drying out a bit with each passing day. 

Does this cake have to be refrigerated?

Yes it does because of the cream cheese icing. So if you make this for a potluck or party, BBQ store it in the fridge until your ready to take it to your destination.

Key lime is typically thought of as being made in the form of a pie, but this cake is really wonderful.  It’s so light and fluffy, and the icing is creamy, and cool, and its just delicious. 

You’ll love the sweet tangy flavor the key lime juice gives this cake, and it’s really moist too.  Put this one in your favorites, cause it’ll be asked for again and again.

Key Lime Sheet Cake

Get ready to fall in love with the lime flavor of this cake. It’s going to be one sheet cake recipe that you’re never going to forget! 

Key Lime Sheet Cake on a white plate

Key Lime Sheet Cake

Talk about a cake full of flavor! This Key Lime Sheet Cake is flavorful and buttery. It's a delicious cake with a citrus cream cheese frosting that is perfect for the summer heat! 
3.15 from 7 votes
Print Pin Rate
Course: Dessert
Cuisine: American
Prep Time: 20 minutes
Cook Time: 30 minutes
Servings: 12 Servings



  • 2 1/2 cups of flour
  • 1 – 3 ounce package of Lime Jello
  • 1/2 teaspoon of salt
  • 1 teaspoon of baking powder
  • 1 teaspoon of baking soda
  • 1 1/2 cups of sugar
  • 1 1/2 cups of vegetable oil
  • 3/4 cup of Nellie and Joe's Key Lime Juice or other good brand of your choice
  • 1 Tablespoon of lemon juice
  • 1/2 teaspoon of Vanilla
  • 5 large eggs – beaten
  • Lime green food coloring gel – 1 teaspoon


  • 1 stick of butter (1/2 cup) – softened
  • 8 ounce cream cheese
  • 16 ounce powdered sugar
  • 3 – 4 drops of lemon juice


  • Preheat the oven to 350 degrees.
  • Grease and flour a 9 X 13 inch dish, and set aside. In the mixing bowl of a stand mixer, mix the Lime Jello, sugar, flour, salt, baking powder, and baking soda, until completely blended.
  • Add the oil, Key Lime Juice, vanilla, eggs, and lime green food coloring. Mix until well blended.
  • Scrape down the sides of the mixing bowl, and blend one more time.
  • Pour the batter into the greased and floured 9 X 13 dish.
  • Bake for 25 to 30 minutes, or until a toothpick inserted in the center comes out clean.
  • Remove the cake to a wire rack to completely cool.
  • When the cake is cooled, make the icing.
  • Cream together the butter and cream cheese, until smooth and creamy.
  • Add the powdered sugar, a little at a time, until all the powdered sugar is added, and mixing between additions.
  • Mix until the icing is smooth and creamy.
  • Add a few drops of lemon juice at the very end of mixing, just to give the icing a fresh flavor.
  • Ice the cake with the icing, and sprinkle a few crushed graham cracker crumbs on top.
  • Add a slice of lime, serve, and Enjoy!

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