A new twist on a summer classic — this key lime poke cake will have you dreaming of sunny days and ocean waves!

Key Lime Poke Cake

This gorgeous  icebox cake is bursting with tangy lime and creamy condensed milk "pudding" in every bite. Each spoonful is pure bliss!

Course Dessert
Cuisine American
Keyword birthday, cake, Chia Pudding, edible slime, green
Prep Time 10 minutes
Cook Time 30 minutes
Chill Time 2 hours
Total Time 2 hours 40 minutes
Servings 16
Calories 562 kcal
Author Stacey aka the Soccer Mom


Cake Ingredients

  • 1 box key lime cake mix
  • 3 eggs
  • 1/2 cup oil
  • 1 cup water
  • 3 limes
  • 1 can sweetened condensed milk
  • 3/4 cup whipping cream
  • 3 Tablespoons grated lime zest + 1 1/2 for "pudding"
  • 2 drops green gel food coloring

Frosting Ingredients

  • 1 1/2 cups unsalted sweet cream butter softened
  • 3 cups powdered sugar
  • 1 teaspoon vanilla extract
  • 1 1/2 limes juiced
  • 1 1/2 teaspoons lime zest
  • 2-3 Tablespoons heavy whipping cream
  • 1 lime sliced, for garnish


To Make the Cake

  1. Preheat oven to 350°F. Meanwhile, prepare cake mix according to directions on box, adding juice from 1 and 1/2 lime and 3 tablespoons grated lime zest to the batter.
  2. Lightly grease or spray a 9x13 glass baking pan and pour in your batter.
  3. Bake for 25-30 minutes at 350°F (or until a toothpick stuck into the cake comes out clean).
  4. While cake is baking, add sweetened condensed milk, whipping cream, juice from 1 and 1/2 lime, and 1 and 1/2 tablespoons lime zest to a large mixing bowl. Mix until well combined.
  5. Add in the green gel coloring and mix until your "pudding" is a smooth, even light green.
  6. Once cake is finished baking, remove from oven and poke holes in the cake, 2 inches apart, with the back of a wooden spoon.
  7. Pour pudding batter over the cake, spreading with a spoon to make sure it soaks in to all of the holes.
  8. Chill in fridge for 2 hours.

To Make the Frosting

  1. Using a standing mixer, combine the butter, powder sugar, vanilla, lime juice and zest, and heavy whipping cream on medium speed. Mix until ingredients are well incorporated and stiff peaks form.
  2. If frosting is dry or clumpy, add another tablespoon of heavy whipping cream and continue to mix until smooth stiff peaks form.

To Decorate

  1. Scoop frosting into the piping bag fitted with the star tip. Pull the poke cake out of the fridge and pipe on frosting all over the cake. Using the knife, smooth out the frosting and place the lime slices on top.

Recipe Notes

Note: Nutrition information is a rough estimate only; actual values will vary based on the exact ingredients used and amount of recipe prepared.

Nutrition Facts
Key Lime Poke Cake
Amount Per Serving
Calories 562 Calories from Fat 297
% Daily Value*
Fat 33g51%
Saturated Fat 16g100%
Cholesterol 102mg34%
Sodium 425mg18%
Potassium 150mg4%
Carbohydrates 63g21%
Sugar 49g54%
Protein 4g8%
Vitamin A 835IU17%
Vitamin C 4.5mg5%
Calcium 161mg16%
Iron 0.9mg5%
* Percent Daily Values are based on a 2000 calorie diet.