Key Lime Cake

key limes
Thu Thai Thanh / EyeEm / Getty Images
  • Total: 75 mins
  • Prep: 20 mins
  • Cook: 55 mins
  • Servings: 16 servings
Nutritional Guidelines (per serving)
208 Calories
15g Fat
18g Carbs
2g Protein
See Full Nutritional Guidelines Hide Full Nutritional Guidelines
Nutrition Facts
Servings: 16
Amount per serving
Calories 208
% Daily Value*
Total Fat 15g 20%
Saturated Fat 1g 7%
Cholesterol 52mg 17%
Sodium 21mg 1%
Total Carbohydrate 18g 6%
Dietary Fiber 1g 3%
Protein 2g
Calcium 17mg 1%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

This key lime cake is a moist and flavorful cake and a box of lemon cake mix makes it a super easy preparation. The cake is baked in one layer. An easy Key lime syrup is poured over the poked cake while it's still warm.

Key limes are smaller than Persian limes. They're slightly yellow and have a distinctive, tart flavor. Use Florida Key limes for the best flavor. Key limes are used in everything from cocktails and pies to cheesecake and s'mores.


  • 4 eggs
  • 1 cup water
  • 1 cup vegetable oil
  • 2 tablespoons key lime juice
  • 1 small box lemon instant pudding (approx. 3 ounces)
  • 1 box lemon cake mix
  • For the Key Lime Syrup/Glaze:
  • 2 cups confectioners' sugar
  • 1/3 cup key lime juice

Steps to Make It

  1. Gather the ingredients.

  2. Preheat the oven to 325 F.

  3. Grease and flour a 9x13x2-inch baking pan.

  4. In a mixing bowl with an electric mixer, beat eggs; add water, oil, 2 tablespoons of lime juice, instant pudding and cake mix. Beat until well blended.

  5. Pour into the prepared baking pan.

  6. Bake for approximately 45 to 55 minutes.

  7. Meanwhile, in a bowl, combine the confectioners' sugar and 1/3 cup of lime juice. Stir or whisk until smooth.

  8. About 5 to 10 minutes after the cake comes out of the oven, prick the surface all over with a fork or skewer.

  9. Pour glaze over cake.

  10. Cool and serve the cake from the pan.

  11. Enjoy!