Go Back

Easy Key Lime Cupcakes

Soft and fluffy key lime cupcakes with a bright citrus flavor and creamy lime frosting. This easy key lime cupcakes recipe is perfect for parties, gatherings, or simple homemade desserts.
Print Recipe Pin Recipe
Prep Time 15 minutes
Cook Time 20 minutes
Servings: 12
Course: Dessert
Cuisine: American
Ingredients Method Notes

Ingredients
  

  • 1 ½ c all-purpose flour
  • 1 tsp baking powder
  • ½ tsp baking soda
  • ¼ tsp salt
  • 1 c unsalted butter soft
  • ¾ c sugar
  • 2 large eggs
  • 7 tsp lime zest
  • 2 ¼ c lime juice
  • ½ c buttermilk
  • 1 tsp vanilla extract
  • 3 c powdered sugar
  • 1-2 tbsp milk

Method
 

  1. Preheat oven to 350°F and line a cupcake pan with liners.
  2. In a bowl, whisk together flour, baking powder, baking soda, and salt until evenly combined.
  3. In another bowl, beat butter and sugar for 2 to 3 minutes until light and fluffy.
  4. Add eggs one at a time, mixing well after each addition. Then mix in lime zest, lime juice, and vanilla extract.
  5. Add dry ingredients in parts, alternating with buttermilk. Mix gently until just combined and smooth.
  6. Fill cupcake liners about two-thirds full with batter.
  7. Bake for 18 to 20 minutes or until a toothpick inserted in the center comes out clean.
  8. Let cupcakes cool in the pan for 5 minutes, then transfer to a rack to cool completely.
  9. For frosting, beat butter until smooth. Add powdered sugar gradually, then mix in lime juice and zest. Adjust consistency with milk if needed.
  10. Frost completely cooled cupcakes and garnish with extra lime zest if desired.

Notes

  • Use fresh lime zest for best flavor
  • Do not overmix batter to keep cupcakes soft
  • Make sure cupcakes are fully cooled before frosting