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Key Lime Cupcakes with Creamy Lime Frosting Recipe


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3.9 from 76 reviews

  • Author: Emma
  • Total Time: 35 minutes
  • Yield: 12 cupcakes 1x

Description

These Key Lime Cupcakes are a delightful citrus treat featuring moist, tangy cupcakes made with fresh key lime zest and juice, filled and frosted with a creamy lime-flavored cream cheese frosting. Perfect for dessert lovers seeking a refreshing and zesty flavor in every bite.


Ingredients

Scale

For the Cupcakes:

  • 1 ½ cups all-purpose flour
  • 1 ½ tsp baking powder
  • ¼ tsp salt
  • ½ cup unsalted butter, softened
  • ¾ cup granulated sugar
  • 2 large eggs
  • 1 ½ tsp vanilla extract
  • 2 tbsp key lime zest
  • ¼ cup key lime juice
  • ½ cup buttermilk

For the Creamy Lime Frosting:

  • 8 oz cream cheese, softened
  • ½ cup unsalted butter, softened
  • 3 cups powdered sugar
  • 2 tbsp key lime juice
  • 1 tbsp key lime zest
  • 1 tsp vanilla extract

Instructions

  1. Preheat and Prepare: Preheat your oven to 350°F (175°C) and line a muffin tin with cupcake liners to ensure the cupcakes bake evenly and don’t stick.
  2. Mix Dry Ingredients: In a bowl, whisk together the all-purpose flour, baking powder, and salt to evenly distribute the leavening agents and seasoning.
  3. Cream Butter and Sugar: In a large mixing bowl, beat the softened butter and granulated sugar together until the mixture is light in color and fluffy in texture, which helps create a tender crumb.
  4. Add Eggs: Add the eggs one at a time into the butter mixture, beating well after each to incorporate fully and maintain the batter’s consistency.
  5. Add Flavorings: Mix in the vanilla extract, key lime zest, and key lime juice to infuse the batter with citrus flavor.
  6. Combine Dry and Wet Ingredients: Alternate adding the dry ingredients and buttermilk to the batter, mixing gently until just combined to avoid overmixing and keep the cupcakes light.
  7. Fill Cupcake Liners: Spoon the batter into the lined muffin tin cups, filling each about three-quarters full to allow space for rising.
  8. Bake: Bake the cupcakes for 18–20 minutes or until a toothpick inserted in the center comes out clean. Remove and let cool completely before frosting.
  9. Prepare Frosting: Beat the softened cream cheese and butter together until smooth and creamy, providing a rich base for the frosting.
  10. Add Sugar: Gradually add powdered sugar, continuing to beat until the frosting is light and fluffy.
  11. Flavor Frosting: Stir in key lime juice, zest, and vanilla extract until the frosting is well combined and vibrantly flavored.
  12. Core Cupcakes: Cut a small hole in the center of each cooled cupcake to create space for the creamy filling.
  13. Fill Cupcakes: Fill each cupcake center with the lime frosting using a piping bag or spoon for an added burst of flavor inside.
  14. Frost Tops: Frost the tops of the cupcakes with the remaining lime frosting, covering the surface evenly.
  15. Garnish: Optionally, garnish with additional lime zest or a small wedge of key lime for a pretty, citrusy finish.

Notes

  • Use fresh key lime juice and zest for the best authentic flavor.
  • Ensure butter and cream cheese are softened to room temperature for smooth frosting.
  • Do not overmix the batter to keep cupcakes tender and light.
  • Store cupcakes in an airtight container in the refrigerator due to the cream cheese frosting.
  • Allow cupcakes to come to room temperature before serving for the best taste and texture.
  • Prep Time: 15 minutes
  • Cook Time: 20 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American