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lime cake cut and served on a white plate
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4.27 from 63 votes

Key Lime Cake

This perfectly flavored lime cake topped with a creamy lime frosting is just the right combo of sweet and tart. Every bite bursts with fresh lime flavor that just feels like summertime!
Prep Time10 minutes
Cook Time20 minutes
Total Time30 minutes
Course: Dessert
Cuisine: American
Keyword: 30 minutes or less, cake, fruit, spring, St. patrick's day, summer
Servings: 8 slices
Calories: 368kcal

Ingredients

Cake Ingredients

  • 1 box lemon cake mix
  • 1 box lime jello (3 oz size)
  • oil amount according to cake mix directions
  • eggs amount according to cake mix directions
  • water half of the amount in cake mix directions
  • lime juice to replace the other half of water amount in cake mix directions

Frosting Ingredients

  • 1 container of vanilla frosting
  • 1 1/2 cup powder sugar
  • 1/4 c lime juice

Instructions

  • Preheat your oven to 350. Prepare 2 9-inch round pans by spraying them with cooking spray and/or lining them with parchemnt or wax paper.
  • Mix the dry lemon cake mix with the jello mix until combined. Add the rest of the ingredients on the back of the cake mix box, EXCEPT substitute half of the water with lime juice, (i.e. if you need 1 1/2 cups of water, use 3/4 cup water and 3/4 cup lime juice).
    mixing ingredients for the key lime cake
  • Bake according to package directions.
  • While the cake is cooking, prepare the frosting by placing the powder sugar, premade frosting, and lime juice in a bowl. Beat until smooth.
    making frosting in a glass bowl
  • Once the cake has cooled, remove from pans and spread the frosting on each cake to your liking. You can stack the cakes on top of each other, or serve as 2 separate cakes.
    lime cake cut and served on a white plate

Nutrition

Serving: 1slice | Calories: 368kcal | Carbohydrates: 86g | Protein: 3g | Fat: 2g | Saturated Fat: 1g | Polyunsaturated Fat: 0.2g | Monounsaturated Fat: 0.5g | Trans Fat: 0.1g | Sodium: 521mg | Potassium: 40mg | Fiber: 1g | Sugar: 59g | Vitamin A: 4IU | Vitamin C: 2mg | Calcium: 138mg | Iron: 1mg