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Key Lime Cupcakes

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  • Author: Sarra
  • Prep Time: 20 minutes
  • Cook Time: 20 minutes
  • Total Time: 40 minutes
  • Yield: 12 cupcakes 1x
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Description

These Key Lime Cupcakes are light, zesty, and bursting with citrus flavor. The moist lime-infused cake pairs perfectly with a creamy key lime buttercream frosting. These cupcakes are a refreshing treat, ideal for summer parties, brunches, or anytime you’re craving a sweet tropical escape.


Ingredients

Units Scale
  • For the cupcakes:
  • 1 1/2 cups all-purpose flour
  • 1 1/2 tsp baking powder
  • 1/4 tsp salt
  • 1/2 cup unsalted butter, room temperature
  • 1 cup granulated sugar
  • 2 large eggs
  • 1/2 cup milk
  • 1/4 cup key lime juice (fresh preferred)
  • 1 tbsp key lime zest
  • 1 tsp vanilla extract
  • For the frosting:
  • 1 cup unsalted butter, room temperature
  • 3 1/2 cups powdered sugar
  • 3 tbsp key lime juice
  • 1 tbsp key lime zest
  • Pinch of salt
  • Optional: green food coloring

Instructions

  • Preheat oven to 350°F (175°C) and line a muffin pan with 12 cupcake liners.
  • In a bowl, whisk together flour, baking powder, and salt. Set aside.
  • In another bowl, cream butter and sugar until fluffy.
  • Add eggs one at a time, mixing well, then stir in milk, lime juice, zest, and vanilla.
  • Gradually mix in the dry ingredients just until combined.
  • Divide the batter evenly into liners and bake for 18–20 minutes or until a toothpick inserted comes out clean.
  • Cool completely before frosting.
  • For the frosting, beat butter until creamy. Add lime juice, zest, and salt. Gradually add powdered sugar until fluffy.
  • Pipe or spread frosting onto cooled cupcakes and garnish with lime zest or a small lime wedge.

Notes

  • For stronger lime flavor, add a few drops of lime extract.
  • Cupcakes can be made a day in advance and stored in the fridge.

Nutrition

  • Calories: 330
  • Sugar: 30g
  • Sodium: 115mg
  • Fat: 19g
  • Saturated Fat: 11g
  • Unsaturated Fat: 6g
  • Trans Fat: 0g
  • Carbohydrates: 37g
  • Fiber: 0g
  • Protein: 2g
  • Cholesterol: 55mg