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–+ servings
key lime pound cake turned at an angle on wire cooling rack with two slices laying in front on marble surface, with a knife and key limes around, a stack of plates, an empty glass, and an glass with white flowers behind.

Key Lime Sour Cream Pound Cake

4.62 from 21 votes
Prep Time: 15 minutes
Cook Time: 1 hour 5 minutes
Total Time: 1 hour 20 minutes
Author: Traci Crossland
This Key Lime and Sour Cream Pound Cake is sweet, dense, and full of bright key lime flavor! Bonus? It's easy to make, a real crowd pleaser, and is the perfect cake to make for any and every occasion!

Ingredients

Cake

  • 1⅛ cup sour cream
  • ⅞ cup vegetable oil
  • 3 large eggs room temperature
  • 3 Tablespoons key lime juice
  • 2 cups all purpose flour*
  • 1¼ cup granulated sugar
  • 2 Tablespoons key lime zest
  • 1⅓ teaspoon baking powder
  • ¼ teaspoon baking soda
  • ⅔ teaspoon salt

Icing

  • 1 cup powdered sugar sifted
  • 2 Tablespoons key lime juice
US Customary - Metric

Instructions

Cake

  • Heat oven to 350℉.
  • Spray a 9 inch loaf pan with baking spray. Set aside.
  • In a large bowl, whisk together sour cream, vegetable oil, eggs, egg yolk, and lime juice.
  • Whisk in flour, sugar, zest, baking powder, baking soda, and salt.
  • Whisk until smooth.
  • Pour into prepared pan.
  • Bake for 45 minutes, or until cake tests done.
  • Allow to cool 10-15 minutes before turning out.

Icing

  • In a small bowl, whisk together powdered sugar and lime juice until smooth.
  • Spread over top of cooled cake.

Notes

*This recipe was written using an average of the dip and sweep method for measuring flour and the spoon and level method. If you are using a scale, you will need to add 3/4 oz or 22 g  to the measurement for each cup of flour.
Substitutions:
  • If desired, you can use full-fat greek yogurt instead of sour cream.
  • Regular limes can be used in this recipe instead of key limes.
  • This recipe can be made vegan if unsweetened/plain plant-based yogurt and your favorite vegan egg substitute are used. We like to use aquafaba!
Expert Tips:
  • Check the expiration date on your baking soda and baking powder.
  • Remember to preheat your oven.
  • Use an oven thermometer to ensure your oven is at the correct temperature.
  • Pack the lime zest in the measuring spoon. If you scoop lightly, you won't have very much lime flavor.
  • Be careful not to over mix your cake batter!
  • Let the cake cool completely before icing.

Nutrition

Serving: 1sliceCalories: 372kcalCarbohydrates: 46gProtein: 4gFat: 20gSaturated Fat: 5gPolyunsaturated Fat: 8gMonounsaturated Fat: 5gTrans Fat: 0.1gCholesterol: 69mgSodium: 291mgPotassium: 79mgFiber: 1gSugar: 28gVitamin A: 226IUVitamin C: 3mgCalcium: 60mgIron: 1mg

Nutritional information is only an estimate. The accuracy of the nutritional information for any recipe on this site is not guaranteed.