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slice of key lime cake
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Buttery Key Lime Cake Recipe

If you have a craving for key lime, skip the pie and make this Buttery Key Lime Cake Recipe. This moist cake is buttery and flavorful with a bright green cake and a delicious citrus cream cheese frosting. This is the perfect cake for a summer time get together.
Prep Time20 mins
Cook Time1 hr 5 mins
Course: Dessert
Cuisine: American
Keyword: key lime cake
Servings: 12
Author: Jill


For the Cake

  • 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
  • 1 Tablespoon of lemon juice
  • 1/2 teaspoon of Vanilla
  • 5 large eggs - beaten
  • Lime green food coloring gel - 1 teaspoon

For the Frosting

  • 1 stick of butter - softened
  • 1 package of cream cheese - 8 ounces
  • 1 pound of 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 - or you can top with green sugars.
  • Add a slice of lime, serve, and Enjoy!