Key Lime Buttercream Frosting Recipe

This dreamy Key Lime Buttercream Frosting recipe from Southern Living is a tangy, sweet, and incredibly easy-to-make topping perfect for cakes, cupcakes, or even cookies! The vibrant lime flavor and creamy texture will transport you straight to a sunny Southern afternoon. Get ready for rave reviews!

Prep Time 5 mins
Cook Time 10 mins
Calories 949.5 kcal
Protein 1g
Rating 5.0 (4 Reviews)
Key Lime Buttercream Frosting 19

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Recipe Author

Chef Forktionary, author of this recipe

Recipe adapted from Food.com. Standardized by Forktionary.

Ingredients for Key Lime Buttercream Frosting

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How to Make Key Lime Buttercream Frosting

  1. In a large bowl, beat together 1 cup (2 sticks) softened unsalted butter, 3 large egg yolks, 1/2 cup key lime juice, and 1 teaspoon key lime zest at medium speed with an electric mixer until light and fluffy (about 3 minutes).
  2. Gradually add 4 cups powdered sugar, alternating with 2 tablespoons key lime juice and 2 tablespoons milk, one tablespoon at a time, beating at low speed until smooth and creamy after each addition. Scrape down the sides of the bowl as needed.
  3. Beat in 1-2 tablespoons of additional milk, if necessary, to reach your desired consistency.
  4. Taste and adjust sweetness or lime flavor as desired. Enjoy!

Nutrition Information (Approximate per serving)

Sodium

14 g

Sugar

647g

Fat

106g

Carbs

55g